The 7th Advanced Lasers and Photon Sources 2018(ALPS2018)

Program

April 24 Tue.

ALPS1-B: High power lasers
Chair: Fumihiko Kannari(Department of Electronics and Electrical Engineering, Keio University, Japan)

Room 303

Start End Session No. Title Speaker Description
9:00 9:15 Opening
Remarks
Hitoki Yoneda
Institute for Laser Science, The University of Electro-Communications (UEC), Japan
9:15 9:45 ALPS1-B-1
Invited
High Average Power and High Energy Ultrafast Thin-Disk Amplifiers Catherine Y. Teisset1, Christoph Wandt1, Marcel Schultze1, Sandro Klingebiel1, Stephan Prinz1, Sebastian Stark1, Christian Grebing1, Jan-Philipp Negel2, Helge Höck2, Michael Scharun2, Thomas Dietz2, Dominik Bauer2, Aleksander Budnicki2, Christian Stolzenburg2, Dirk Sutter2, Alexander Killi2, Thomas Metzger1
1TRUMPF Scientific Lasers GmbH + Co. KG, Germany,
2TRUMPF Laser GmbH, Germany
Our commercial picosecond thin-disk regenerative amplifiers are available with up to 200 mJ-pulses and 1 kW of average power. Preliminary scaling results in multipass show potential for multi-kW systems.
9:45 10:15 ALPS1-B-2
Invited
Graphene and Voltage Reconfigurable Graphene Devices for Femtosecond Pulse Generation in the Near Infrared Alphan Sennaroglu1, 2, Isinsu Baylam2, Ferda Canbaz1, Nurbek Kakenov3, Coskun Kocabas3, Umit Demirbas4, Sarper Ozharars5
1Laser Research Laboratory, Departments of Physics and Electrical-Electronics Engineering, Koç University, Turkey,
2Koç University Surface Science and Technology Center (KUYTAM), Koç University, Turkey,
3Department of Physics, Bilkent University, Turkey,
4Department of Electrical and Electronics Engineering, Antalya Bilim University, Turkey,
5College of Engineering and Natural Sciences, Bahçe●ehir University, Turkey
By using graphene and voltage reconfigurable graphene-based fast saturable absorbers, we describe femtosecond pulse generation experiments performed with Cr3+:LiSAF, Cr4+:forsterite, and Ti3+:sapphire tunable solid-state lasers over the 800-1250 nm region.
10:15 10:30 ALPS1-B-3 Kumgang laser: stimulated Brillouin scattering phase conjugate mirrors (SPC-SBS-PCM) for high repetition rate lasers towards the coherent beam combining Hong Jin Kong, Seongwoo Cha
Department of physics, KAIST, Korea
The recent status of the development of a self-phase-controlled stimulated Brillouin scattering phase conjugate mirror (SPC-SBS-PCM) for the high repetition rate and high output energy laser system will be presented.
10:30 11:00 Break

ALPS2-H: Biomedical Imaging and Sensing
Chair: Masayuki Suzuki(Faculty of Medicine, Aichi Medical University, Japan)

Room 303

Start End Session No. Title Speaker Description
11:00 11:30 ALPS2-H-1
Invited
Development of depth-sensitive optical spectroscopy Quan Liu, Joshua Su Weiming, Chao-Mao Hsieh
School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
We will review the development of depth sensitive optical spectroscopy techniques from earlier fiber-optic based probes to non-contact axicon lens based probes in our group and the corresponding numerical methods for optimization.
11:30 11:45 ALPS2-H-2 3D high-resolution spectral-domain optical coherence microscopy at 1700 nm spectral band for deep tissue imaging Naoki Hayakawa1, Masahito Yamanaka1, Hiroyuki Kawagoe1, Shuichi Makita2, Yoshiaki Yasuno2, Norihiko Nishizawa1
1Dept. Electronics, Nagoya University, Japan,
2Computational Optics Group, University of Tsukuba, Japan
1700 nm spectral band is useful for deep tissue imaging. We developed spectral-domain optical coherence microscopy (SD-OCM) at 1700 nm spectral band, and demonstrated high-resolution deep tissue imaging of tissue specimens.
11:45 12:00 ALPS2-H-3 Mid Infrared Cavity Ring-Down Spectroscopy for Radiocarbon Analysis toward Medical Applications Ryohei Terabayashi1, Volker Sonnenschein1, Hideki Tomita1, Noriyoshi Hayashi1, Kato Shusuke1, Shin Takeda1, Lei Jin1, Masahito Yamanaka1, Norihiko Nishizawa1, Atsushi Sato2, Kenji Yoshida2, Kohei Nozawa2, Tetsuo Iguchi1
1Graduate School of Engineering, Nagoya University, Japan,
2Drug Development Solutions Center, Sekisui Medical Co. Ltd., Japan
Radiocarbon analysis based on Cavity Ring-Down Spectroscopy (14C-CRDS) for the applications of drug development has been developed. An overview, status of our current system and some experimental results of 14C-CRDS will be shown.
12:00 13:00 Lunch

ALPS3-A: Novel optical materials/structures and application
Chair: Sunao Kurimura(National Institute for Materials Science, Japan),
Yoichi Sato(Institute for Molecular Science, National Institutes of Natural Sciences, Japan)

Room 511+512

Start End Session No. Title Speaker Description
10:45 11:15 ALPS3-A-1
Invited
QPM devices in KTP isomorphs: linear, nonlinear absorption properties and extreme domain aspect-ratios Carlota Canalias, Andrius Zukauskas, Staffan Tjörnhammar, Anne-Lise Viotti, Charlotte Liljestrand, Valdas Pasiskevicius, Fredrik Laurell
Applied Physics department, KTH Royal Institute of Technology, Albanova University Center, Sweden
We demonstrate QPM devices in KTP isomorphs with extreme ferroelectric-domain aspect-ratios. The performance of these devices, as well as their linear and nonlinear absorption, are discussed.
11:15 11:30 ALPS3-A-2 Mg:SLT-based nonlinear optical light sources for down conversion Sunao Kurimura1, Ryo Okamoto2, Shigeki Takeuchi2
1National Institute for Materials Science, Japan,
2Kyoto University, Japan
Bright light sources with nonlinear parametric process in Mg:SLT are presented with blue-violet light pumping. Combination between GaN laser diodes and waveguide nonlinear devices will be discussed for future compact light sources.
11:30 11:45 ALPS3-A-3 Design of magnetic anisotropy in micro domains for Yb:Fluoroapatite Laser Ceramics Yoichi Sato, Jun Akiyama, Takunori Taira
Institute for Molecular Science, National Institutes of Natural Sciences, Japan
According to microdomain designed by quantum mechanical calculations transparent polycrystalline Yb:FAP laser ceramics was synthesized under rotational magnetic field of 1.4T. Small scattering loss of anisotropic ceramics suggests the significance of the orientation control technology.
11:45 12:00 ALPS3-A-4 Vertical cavity lasing from CH3NH3PbCl3 microcrystals under multiphoton excitation Decheng Yang, Chao Xie, Feng Yan, Siu Fung Yu
Department of Applied Physics, The Hong Kong Polytechnic University, China
Photoluminescence (PL) property of CH3NH3PbCl3 microcrystals under single- and multi-photon excitation is studied. The microcrystal is a natural vertical cavity and can support lasing action at orthorhombic phase under multiphoton excitation.
12:00 13:00 Lunch

ALPS4-E1: Extreme Light Infrastructure 1
Chair: Katsumi Midorikawa(RIKEN Center for Advanced Photonics, Japan)

Room 303

Start End Session No. Title Speaker Description
13:00 13:30 ALPS4-E1-1
Invited
Paving the Way towards Novel Applied and Fundamental Sciences with ELI-Beamlines Sergei V. Bulanov1, 2
1Institute of Physics AS CR, v.v.i (FZU), ELI-Beamlines, Czech Republic,
2National Institutes for Quantum and Radiological Science and Technology (QST), Kansai Photon Science Institute, Japan
The ELI-BL aspires to install and run the world’s most intense laser system. These beamlines will enable ground-breaking research in the fields of physics and material science, in biomedicine, in fundamental science and laboratory astrophysics.
13:30 14:00 ALPS4-E1-2
Invited
Laser-based research technologies at ELI-ALPS Karoly Osvay, A. Borzsonyi, D. Charalambidis, E. Cormier, L. Fulop, M. Kalashnikov, Ch. Kamperidis, B. Kiss, R. Lopez-Martens, G. Sansone, Z. Várallyay, K. Varju
ELI-ALPS, ELI-HU Non-Profit Ltd., Hungary
Laser systems operating in the 100W average power regime provide ELI-ALPS with TW-to-PW peak power pulses for generation of secondary light sources with a duration of tens of attosecond for basic and applied researches.
14:00 14:30 ALPS4-E1-3
Invited
ELI-NP Status and Plan Kazuo A. Tanaka
ELI-NP/IFIN-HH, Romania
ELI-NP has been in the implementation phase now as of 2018. The installation of high-power laser system has been on time.
14:30 15:00 ALPS4-E1-4
Invited
High Power Laser Development and its application for High Energy Density Science Ryosuke Kodama
Institute of Laser Engineering, Osaka University, Japan
15:00 15:15 Break

ALPS5-I1: Optical Frequency Comb (Light Source)
Chair: Hajime Inaba(National Institute of Advanced Industrial Science and Technology, Japan)

Room 511+512

Start End Session No. Title Speaker Description
13:00 13:30 ALPS5-I1-1
Invited
Optical frequency combs: From lab-scale to chip-scale Scott A. Diddams1, 2
1National Institute of Standards and Technology, USA,
2Department of Physics, University of Colorado, USA
We report on the latest developments in laboratory and chip-scale optical frequency combs and our application to atomic timekeeping, spectroscopy, frequency synthesis and exoplanet searches.
13:30 13:45 ALPS5-I1-2 Er-doped Bi-directional Dual-comb Fiber Laser With Single-walled Carbon Nanotube Film Shuto Saito1, Lei Jin1, Yoichi Sakakibara2, Emiko Omoda2, Hiromichi Kataura2, Norihiko Nishizawa1
1Department of Electronics, Nagoya University, Japan,
2National Institute of Advanced Industrial Science and Technology (AIST), Japan
Bi-directional, Er-doped dual-comb fiber laser was demonstrated using polyimide film dispersed with single-walled carbon nanotube (SWNT). Difference of repetition frequency was temporally stable and it could be tuned continuously by pump power control.
13:45 14:00 ALPS5-I1-3 Evaluation of Broadband Coherence of Bidirectional Mode-Locked Er-Fiber Laser with Two Saturable Absorber Mirrors Yoshiaki Nakajima1, 2, Yuya Hata1, Kaoru Minoshima1, 2
1Department of Engineering Science, Graduate School of Informatics and Engineering, the University of Electro-Communications, Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan
The broadband coherence of bidirectional mode-locked Er-fiber laser with two saturable absorption mirrors is evaluated. We obtain a signal-to-noise ratio of 35 dB between the narrow linewidth single frequency laser and output.
14:00 14:15 ALPS5-I1-4 All-Polarization-Maintaining Dual-wavelength mode-locked Er-fiber laser with nonlinear amplifying loop mirror Yoshiaki Nakajima1, 2, Yuya Hata1, Kaoru Minoshima1, 2
1Department of Engineering Science, Graduate School of Informatics and Engineering, the University of Electro-Communications, Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan
All-polarization-maintaining dual-wavelength mode-locked fiber laser with nonlinear amplifying loop mirror has been demonstrated for realizing simple and robust dual-comb spectroscopy using two mutually coherent combs with slightly different repetition rates emitted from the laser cavity.
14:15 14:30 ALPS5-I1-5 Mid-infrared Frequency Comb Based on Er-doped Ultrashort Pulse Fiber Laser System and Tm-doped Fiber Amplifier Kento Mochizuki1, T. Masahumi1, L. Jin1, M. Yamanaka1, V. Sonnenschein1, H. Tomita1, T. Iguchi1, A. Sato2, K. Hashizume2, K. Nozawa2, N. Nishizawa1
1Nagoya University, Japan,
2Sekisui Medical Co. Ltd., Japan
We demostrated offset-free mid-infrared frequency comb at 4.3-4.9 μm with difference frequency generation pumped by Er-doped ultrashort pulse fiber laser.
14:30 14:45 ALPS5-I1-6 Canceled
14:45 15:00 ALPS5-I1-7 Nonlinear Parametric Oscillation Phase-matched via High-order Dispersion in High-Q Silica Toroid Microresonators Shun Fujii, Minori Hasegawa, Ryo Suzuki, Takasumi Tanabe
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, Japan
We demonstrated optical nonlinear parametric oscillation phase-matched via high-order dispersion in dispersion engineered silica toroid microresonators. The balance between second- and forth-order dispersions allows generation of phase-matched four-wave mixing in broadband wavelength regime.
15:00 15:30 Break

ALPS6-E2: Extreme Light Infrastructure 2
Chair: Kazuo A. Tanaka(ELI-NP/IFIN-HH, Romania)

Room 303

Start End Session No. Title Speaker Description
15:15 15:45 ALPS6-E2-1
Invited
High Harmonic Generation and Attosecond Science at RIKEN Katsumi Midorikawa
RIKEN Center for Advanced Photonics, Japan
Recent progress on high harmonic generation and attosecond science at RIKEN is presented, including novel ultrafast laser technology for generation intense isolated attosecond pulses and MHz repetition rated high harmonics.
15:45 16:15 ALPS6-E2-2
Invited
Laser-driven Particle Acceleration and Ultra-short X-Ray Generation using PW-class High Power Lasers Tetsuya Kawachi
Kansai Photon Science Institute (KPSI), Quantum Beam Science Directorate, National Institutes for Quantum and Radiological Science and Technology (QST), Japan
Recent progress of the study of laser particle acceleration and coherent x-ray generation using ultra-intense lasers in QST-KPSI [1] and future prospect including international collaboration on high power laser science and technology are presented.
16:15 16:45 ALPS6-E2-3
Invited
The ELI-ERIC: status, agreements and basic rules Florian Gliksohn
ELI Delivery Consortium, Belgium
16:45 17:15 ALPS6-E2-4
Invited
Photon Frontier Network Opening Frontiers by Complete Control of Light and Matter Yoshiaki Kato1, Ryosuke Kodama2, Norikatsu Mio3
1The Graduate School for Creation of New Photonics Industries, Japan,
2Institute of Laser Engineering, Osaka University, Japan,
3Institute for Photon Science and Technology, School of Science, University of Tokyo, Japan
Photon Frontier Network, 10-year program implemented in FY 2008-2017 under MEXT, is composed of the consortia C-PhoST and APSA with participation of ~200 scientists. Several results on coherent control of light and matter are presented.

ALPS7-I2: Optical Frequency Comb (Applications)
Chair: Scott Diddams(National Institute of Standards and Technology, USA)

Room 511+512

Start End Session No. Title Speaker Description
15:30 16:00 ALPS7-I2-1
Invited
Ultrafast Photonics for Precision Optical Measurement and Instrumentation Seung-Woo Kim
Korea Advanced Institute of Science and Technology (KAIST), Korea
A practical scheme of constructing a versatile source of narrow-linewidth cw lasers based on the frequency comb of a mode-locked fiber laser is presented along with potential applications for optical metrology and instrumentation.
16:00 16:15 ALPS7-I2-2 Mid-Infrared Frequency Comb Working at 4500 nm Based on Yb-doped Fiber Laser for CRDS Application Lei Jin1, V. Sonnenschein1, R. Terabayashi1, N. Hayashi1, S. Sato1, M. Yamanaka1, H. Tomita1, T. Iguchi1, A. Sato2, K. Nozawa2, K. Yoshida2, N. Nishizawa1
1Dpet. Electronics, Nagoya University, Japan,
2Sekisui Medical Co. Ltd., Japan
An offset free mid-infrared optical frequency comb was generated based on an Yb-doped fiber laser system with tunability of 3900-4700 nm. Cavity ring down spectroscopy measurement was demonstrated with QCL and MIR comb reference.
16:15 16:30 ALPS7-I2-3 No-scanning 3D image detection with sum-frequency generation of optical frequency combs Yurina Tanaka1, 2, Takashi Kato1, 2, Megumi Uchida1, 2, Akifumi Asahara1, 2, Kaoru Minoshima1, 2
1The University of Electro-Communications (UEC), Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer(IOS) Project, Japan
We demonstrate no-scanning 3D imaging with sum-frequency generation of chirped optical frequency combs with μm-level depth accuracy. By using a spectral filter pair and cameras,
2D color image corresponding to 3D shape image is imaged.
16:30 16:45 ALPS7-I2-4 One-shot three-dimensional imaging with a paired filter and an optical pseudo-Hilbert transform using chirped-frequency combs Takashi Kato1, 2, Megumi Uchida1, 2, Yurina Tanaka1, 2, Kaoru Minoshima1, 2
1The University of Electro-Communications (UEC), Japan,
2JST, ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS), Japan
One-shot three-dimensional imaging with chirped-frequency comb interferometry was demonstrated using 2D spectral imaging technique with a paired spectral filter. Non-scanning image measurement of a coin 3D surface profile with 120-pixels square area was demonstrated.
16:45 17:00 ALPS7-I2-5 Simultaneous measurement of refractive index and thickness profiles of solids based on dual-comb spectroscopy Yue Wang1, 2, Akifumi Asahara1, 2, Ken-ichi Kondo1, 2, Kaoru Minoshima1, 2
1The University of Electro-Communications (UEC), Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan
Raster-scanning dual-comb spectroscopy for simultaneously evaluating the profiles of refractive index and thickness of solid samples is demonstrated. Profiles of refractive index and step structure made of glass plates were successfully measured with 10-4 uncertainty.
April 25 Wed.

Joint Session: Joint Session ALPS+HEDS+XOPT
Chairs: Ryosuke Kodama(Osaka University, Japan)
Hitoki Yoneda(Institute for Laser Science, The University of Electro-Communications (UEC), Japan)
Makina Yabashi(RIKEN SPring-8 Center, Japan)

Room 303

Start End Session No. Title Speaker Description
13:30 14:00 HEDSj-1Invited Manipulating Electrons with Intense Laser Pulses Victor Malka1,2
1Laboratoire d’Optique Appliquée, France,
2Weizmann Institute of Science, Israel
I’ll then show how by controlling the quiver motion of relativistic electrons intense and bright X-rays beam are produced in a compact and elegant way. Finally I’ll show some examples of applications.
14:00 14:30 ALPSj-1Invited Development and Commissioning of a 20 fs, 4 PW Laser Junghun Shin1, Hyung Taek Kim1,2, Seong Ku Lee1,2, Jae Hee Sung1,2, Hwang Woon Lee1, Jin Woo Yoon1,2, Cheonha Jeon1, Chang Hee Nam1,3
1Center for Relativistic Laser Science (CoReLS), Institute for Basic Science (IBS), Korea,
2Advanced Photonics Research Institute, Gwangju Institute of Science and Technology (GIST), Korea,
3Department of Physics and Photon Science, GIST, Korea
A 20 fs, 4 PW Ti:Sapphire laser beamline is developed at CoReLS. Details of the new beamline, and commissioning experiments that include focal spot optimization, double plasma mirror, and laser wakefield electron acceleration is presented.
14:30 15:00 XOPTj-1Invited European XFEL – New Opportunities for X-ray Science Robert Krarup Feidenhans’l
European XFEL, Germany
The European X-ray Free Electron Laser is the brightest X-ray free electron in the world due to its superconducting accelerator that allows the delivery of up 27000 intense, ultrashort pulses per second.

ALPS9-G1: Diode Laser and Metamatrials
Chair: Takuo Tanaka(Metamaterials laboratory, RIKEN, Japan)

Room 511+512

Start End Session No. Title Speaker Description
13:30 13:45 ALPS9-G1-1 High-power continuous-wave operation over100W of a single-chip InGaN Laser Diode Atsunori Mochida1, Masao Kawaguchi1, Shinichiro Nozaki1, Hiroyuki Hagino1, Koshi Nakamura1, Shinichi Takigawa1, Kouji Oomori2, Takayuki Yoshida2, TakumaKatayama1, Tsuyoshi Tanaka1
1Sensing Solution Development Center, Engineering Division, Automotive & Industrial Systems Company, Panasonic Corporation, Japan,
2Technology Development Department, Corporate Technology Division, Panasonic Smart Factory Solutions Co., Ltd., Japan
High-power operation over 100W is presented in InGaN laser diodes (LDs). Linear junction-temperature-dependence approximation of wall-plug-efficiency clarifies the relation between thermal saturation and LDs parameters, which enables device design for 100W operation.
13:45 14:00 ALPS9-G1-2 High power Si light emission device using dressed photons Tadashi Kawazoe1, Motoichi Ohtsu2
1Institute of Advanced Laser Technology, Tokyo Denki University, Japan,
2The University of Tokyo, Japan
We fabricated Silicon-electro-luminescence devices e.g., a Si-LED and a Si laser. Their optical output powers of them were more than 1 W (Si-LED) and 10 W (Si-LD).
14:00 14:30 ALPS9-G1-3
Invited
Seeing is Believing!? A super plasmonic probe and a Harry Potter’s invisible cloak Tsung-Yu Huang1, Ruei-Han Jiang1, 2, 3, Chi Chen1, Ding-Zheng Lin3, Jian-Hui Lin1, Tung Lee1, He-Chun Chou3, Jen-You Chu2, Ta-Jen Yen1, 2
1Department of Materials Science and Engineering, National Tsing Hua University, Taiwan,
2Department of Materials and Chemical Research Laboratory, Industrial technology and research institute, Taiwan,
3Research Center for Applied Sciences, Academia Sinica Taiwan
14:30 14:45 ALPS9-G1-4 Controlling the phase transition of vanadium oxide using plasmonic metamaterials James Frame1, Nicolas Green1, Wakana Kubo2, 3, Xu Fang1
1Department of Electronics and Computer Science, University of Southampton, UK,
2Department of Electrical and Electronic Engineering, Tokyo University of Agriculture and Technology, Japan,
3Metamaterials Laboratory, RIKEN, Japan
Thermo-plasmonic engineering at the nanoscale can control macroscopic material properties. We demonstrate utilising plasmonic metamaterials to tune the effective phase transition temperature and electrical conductivity of vanadium oxide thin films.
14:45 15:00 ALPS9-G1-5 Photothermal Electric Effect Triggered by Local Heat under Localized Surface Plasmons Masaki Kondo, Wakana Kubo
Tokyo University of Agriculture and Technology (TUAT), Japan
Photothermal electric effect via plasmonic local heating was observed on the PEDOT:PSS thin film embedding silver nanorod arrays.
15:00 15:30 Break

ALPS10-D1: Semiconductor Lasers and Ultrafast Fiber Lasers
Chair: Shun-ich Matsushita(Laboratories for Fusion Core Technologies, Furukawa Electric Co. Ltd., Japan)

Room 303

Start End Session No. Title Speaker Description
15:30 16:00 ALPS10-D1-1
Invited
Effects of back-irradiance on the reliability of GaAs high power diode pump lasers Paul Orville Leisher1, Susant K. Patra1, Matthew C. Boisselle1, Sezer Sezgin1, Robert J. Deri1, Chen Li2, Aman K. Jha2, Kevin P. Pipe2, Jason D. Helmrich3, Devin E. Crawford3, Prabhu Thiagarajan3
1Lawrence Livermore National Laboratory, USA,
2University of Michigan, USA,
3Lasertel Incorporated, USA
The effects of back-irradiance on the reliability of 800-nm diode lasers is investigated. The root-cause of failure is shown to be thermal. Device reliability can be predicted using an Arrhenius model for thermal acceleration.
16:00 16:15 ALPS10-D1-2 Demonstration of an asymmetric beam in an on-chip 2D-pattern-projecting lasers Takahiro Sugiyama, Kazuyoshi Hirose, Yu Takiguchi, Yoshiro Nomoto, So Uenoyama, Yoshitaka Kurosaka
Central Research Laboratory, Hamamatsu Photonics K.K., Japan
We successfully demonstrated an asymmetric beam pattern in integrable phase-modulating surface-emitting lasers that showed static, arbitrary, two-dimensional beam pattern from on-chip size whereas symmetric beam pattern in the conventional way.
16:15 16:30 ALPS10-D1-3 More than 350kW Peak Power Pulse Generation of sub-100ps pulse width by using a Very Large Mode Area Er-Doped Fiber Amplifier. Ryo Kawahara1, Hiroshi Hashimoto1, Jeffrey W. Nicholson2, Jun Nishina1, Eisuke Otani1, Shun-ichi Matsushita1
1Laboratories for Fusion Core Technologies, Furukawa Electric Co. Ltd., Japan,
2OFS laboratories, USA
We demonstrated more than 350kW peak power pulsed generation of 82.7ps pulse width at 100 kHz by using a very large mode ar a Er-doped fiber amplifier (VLMA-EDFA).
16:30 16:45 ALPS10-D1-4 Robust Yb:fiber laser architecture for high repetition rate femtosecond pulse generation Guanyu Liu, Aimin Wang, Zhigang Zhang
State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, China
We demonstrate a 700MHz repetition rate, 181fs self-starting Yb:fiber laser incorporated with a phase biased nonlinear amplifying loop mirror. Although the fiber is non-polarization maintaining, the mode locking is environmentally stable.
16:45 17:15 ALPS10-D1-5 Spectral-Temporal Dynamics of Soliton Explosion in Passively Mode-Locked Yb Fiber Laser Masayuki Suzuki, Hiroto Kuroda
Faculty of Medicine, Aichi Medical University, Japan
We report on a spectral-temporal dynamics of soliton explosion at a different position of cavity in a passively mode-locked Yb fiber laser with a nonlinear polarization of evolution by using a time-stretched dispersive Fourier transformation.

ALPS11-G2: Nano Structure and Applications
Chair: Takasumi Tanabe(Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, Japan)

Room 511+512

Start End Session No. Title Speaker Description
15:30 15:45 ALPS11-G2-1 UV-laser irradiation of ZnO seed layer for the growth of well-aligned ZnO nanorods Qiyan Zhang, Mitsuhiro Honda, Shinji Takayanagi, Yo Ichikawa
Graduate school of Engineering, Nagoya Institute of Technology, Japan
We found that UV laser irradiation onto the ZnO seed layer induces crystal orientation of the surface, leads to the growth of densely aligned ZnO nanorods on such laser irradiated layer.
15:45 16:00 ALPS11-G2-2 Magneto – optical Kerr effect enhancement by localized plasmon resonance in Au / Co / Au nanostructure Yusuke Kikuchi1, 2, Takuo Tanaka1, 2
1Metamaterials laboratory, RIKEN, Japan,
2School of Materials and Chemical Technology, Tokyo Institute of Technology, Japan
We measured the magneto – optical Kerr effect in Au / Co / Au nanometer sized plasmonic structure. Our results indicate that localized plasmon resonance enhances the Kerr rotation on Au / Co / Au.
16:00 16:15 ALPS11-G2-3 Metal fine periodic structures on polyimide film fabricated by femtosecond laser writing Seiya Toriyama1, Vygantas Mizeikis2, Atsushi Ono2
1Graduate school of Science and Technology, Shizuoka University, Japan,
2Research institute of electronics, Shizuoka University, Japan
We present a new fabrication technique of metal nano-structure on directly polyimide film by employing two-photon induced reduction with femtosecond laser.
16:15 16:30 ALPS11-G2-4 THz Antireflective Structures Fabricated by Femtosecond Laser Processing Xi Yu, Mahiro Takeuchi, Shingo Ono, Jongsuck Bae
Nagoya Institute of Technology, Japan
Antireflective Structures on Si substrates are fabricated by femtosecond laser processing. The structure is constituted by periodic grooves at micro order. Their antireflective characteristics are evaluated by THz-TDS (terahertz time-domain spectroscopy).
16:30 17:00 ALPS11-G2-5 Significant suppression of cross talk and enhancement of angular response in color image sensors using a wave-guided color filter array Kuo-Feng Lin, Chin-Chuan Hsieh
VisEra Technologies Company, Taiwan
The sensitivity and signal-to-noise ratio are significantly improved in use of a wave-guided color filter array design as compared with the entombed color filter array with a micro lens array.
April 26 Thu.

ALPS12-C1: Ultra-High Intensity Lasers and Technology
Chair: Toshiyuki Kawashima(Hamamatsu Photonics K.K., Japan)

Room 303

Start End Session No. Title Speaker Description
9:00 9:30 ALPS12-C1-1
Invited
PW-class multi Hz laser generating ultra-high contrast pulses and interaction with aligned nanostructures Jorge J. Rocca1, Yong Wang1, Shoujun Wang1, Alex Rockwood1, Bradley M. Luther1, Reed Hollinger1, Alden Curtis1, Chase Calvi1, 2, M.G. Capeluto2, V.N. Shlyaptsev1, A. Pukhov3, V. Kaymak3, C. S. Menoni1
1Electrical and Computer Engineering Department, Department of Physics ,Colorado State University, USA,
2FCEyN,University of Buenos Aires, Argentina,
3Heinrich-Heine –Universität Düsseldorf, Germany
We have demonstrated 0.85PW, 30fs laser pulses at 3.3Hz repetition rate from a Ti:Sapphire laser and we have focused ultra-high contrast second harmonic pulses to an intensity of 6.5x1021W/cm2 to study relativistic interactions with nanostructures.
9:30 9:45 ALPS12-C1-2 New Architectures for PW-Scale High Peak Power Lasers Scalable to Near-MW Average Powers Craig William Siders, A.J. Bayramian, K.D. Chesnut, A.C. Erlandson, E. Feigenbaum, T.C. Galvin, W.A. Molander, H.T. Nguyen, M.L. Rehak, P.A. Rosso, E.F. Sistrunk, K.I. Schaffers, T.M. Spinka, C. L. Haefner
Advanced Photon Technologies, Lawrence Livermore National Laboratory, NIF & Photon Science Directorate, USA
Laser architectures based upon multi-pulse extraction and continuous-wave laser diode pumping are scalable to near-MW peak power while maintaining application-enabling PW-class peak power.
9:45 10:00 ALPS12-C1-3 Generation of the Ultraintense Laser Pulse by Focusing the 4 PW Laser Jin Woo Yoon1, 2, Seong Ku Lee1, 2, Jae Hee Sung1, 2, Hwang Woon Lee1, Il Woo Choi1, 2, Cheonha Jeon1, Junghun Shin1, Chang Hee Nam1,3
1Center for Relativistic Laser Science, Institute for Basic Science (IBS), Korea,
2Advanced Photonics Research Institute, GIST, Korea,
3Dept. Of Physics and Photon Science, GIST, Korea
The highest peak intensity of 0.73×1023 W/cm2 was achieved by focusing the 4 PW laser pulse using an f/1.6 OAP.
10:00 10:15 ALPS12-C1-4 Meter-size 575x1015mm Gold-coated Gratings for 10PW-class lasers Arnaud Cotel
HORIBA Scientific, France
We present the latest results of Meter-size gratings production for 10PW-class laser pulse compression. More than 10 Gold-coated 1480gr/mm gratings in size 575x1015mm have already been manufactured and characterized.
10:15 10:30 ALPS12-C1-5 High quality and high damage threshold optics with ozone mixed gas grating Yurina Michine, Hitoki Yoneda
Institute for Laser Science, University of Electro-Communications, Japan
High diffraction efficient and spatial mode cleaner’s transient grating is created with ozone mixed gas pumped by UV lasers. This also has high damage threshold. It opens new high fluence laser optics in air.
10:30 10:45 ALPS12-C1-6 Multiple-Plate Pulse Compression for Generation of Few-Cycle, CEP-Stable, Intense Mid-Infrared Pulses Peiyu Xia, Faming Lu, Nobuhisa Ishii, Teruto Kanai, Jiro Itatani
Institute for Solid State Physics, The University of Tokyo, Japan
Pulse compression of femtosecond mid-infrared pulses is demonstrated using YAG and Si plates. With this multiple-plate compression scheme, we produce sub-two-cycle, CEP-stable, intense pulses (21.0 fs, 45 μJ) with octave-spanning spectrum around 3.5 μm.
10:45 11:00 Break

ALPS13-D2: Visible and Mid-Infrared Lasers
Chair: Masaki Tokurakawa(Institute for Laser Science, The University of Electro-Communications (UEC), Japan)

Room 511+512

Start End Session No. Title Speaker Description
9:00 9:30 ALPS13-D2-1
Invited
Development of direct visible pulse fiber laser Shota Kajikawa1, Minoru Yoshida1, Osamu Ishii2, Masaaki Yamazaki2, Yasushi Fujimoto3
1Faculty of Science and Engineering, Kindai University, Japan,
2Sumita Optical Glass, Inc., Japan,
3Department of Electrical and Electronic Engineering, Chiba Institute of Technology, Japan
A Pr-doped double-clad structured waterproof fluoride glass fibre (Pr:DC-WPFGF) was successfully drawn. Visible pulse oscillation in a Pr:DC-WPFGF with a graphene and SESAM as saturable absorbers (SAs) were reported.
9:30 9:45 ALPS13-D2-2 Characterization of Transition-Metal-Doped Saturable Absorbers for Passive Q-switching of Visible Lasers Hiroki Tanaka1, 2, Elena Castellano-Hernández2, Christian Kränkel2, 3, Fumihiko Kannari1
1Department of Electronics and Electrical Engineering, Keio University, Japan,
2Center for Laser Materials, Leibniz Institute for Crystal Growth, Germany,
3Institute of Laser-Physics, Universität Hamburg, Germany
A detailed characterization of Co2+-doped oxide crystals as visible saturable absorbers is presented. Absorption recovery times, and ground- and excited-state absorption cross sections of a variety of samples are accurately determined.
9:45 10:00 ALPS13-D2-3 Ultrafast Thulium-Doped Fiber Amplifier for Multiphoton Microscopy Yutaka Nomura1, 2, Takao Fuji1
1Institute for Molecular Scienc, Japan,
2JST-PRESTO, Japan
A broadband amplifier system covering 1.7 to 2.0 μm is developed using thulium-doped fibers. Spectral broadening within the amplifier fiber enabled generation of 50 fs pulses at an average power of 4.2 W.
10:00 10:15 ALPS13-D2-4 Femtosecond-Laser-Written Ho:KGd(WO4)2 Waveguide Lasers at 2.06 μm Esrom Kifle1, Pavel Loiko2, Xavier Mateos1, Javier Rodríguez Vázquez de Aldana3, Airan Ródenas1, 4, Magdalena Aguiló1, Francesc Díaz1, Viktor Zakharov2, Andrey Veniaminov2, Uwe Griebner5, Valentin Petrov5
1Física i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS, Dept. Química Física i Inòrganica, Universitat Rovira i Virgili (URV), Spain,
2ITMO University, Russia,
3Aplicaciones del Láser y Fotónica, University of Salamanca, Spain,
4Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR), Italy,
5Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Germany
A circular cladding (60 μm) channel waveguide is femtosecond-laser-written in monoclinic 5 at.% Ho:KGd(WO4)2. Under in-band pumping at 1950 nm, the Ho waveguide laser generated 212 mW at 2055 nm with a slope efficiency of 67 %.
10:15 10:30 ALPS13-D2-5 Point-by-Point inscription of fiber Bragg grating by a Femtosecond laser for 2.8 μm fiber laser Kenji Goya1, Hiyori Uehara1, Satoshi Hattori2, Daisuke Konishi2, Masanao Murakami2, Shigeki Tokita1
1Institute of Laser Engineering, Osaka University, Japan,
2Mitsuboshi Diamond Industrial Co., Ltd., Japan
We demonstrate stable and efficient 2.8 μm fiber laser owing to point-by-point femtosecond laser inscription of fiber Bragg grating in an erbium-doped ZBLAN fiber.
10:30 10:45 ALPS13-D2-6 Efficient CW and Q-switched operation of Er:Lu2O3 ceramic laser at 2.8 μm Hiyori Uehara1, Shigeki Tokita1, Junji Kawanaka1, Daisuke Konishi3, Masanao Murakami3, Seiji Shimizu3, Ryo Yasuhara2
1Institute of Laser Engineering, Osaka University, Japan,
2National Institute for Fusion Science, Japan,
3Mitsuboshi Diamond Industrial Co., Ltd., Japan
Room temperature CW operation with output power of 2.6 W and passively Q-switched operation with pulse energy of 9.4 μJ have been demonstrated by an Er:Lu2O3 ceramic at 2.85 μm wavelength.
10:45 11:00 Break

ALPS14-C2: High Energy Lasers and Technology
Chair: Hiromitsu Kiriyama(Kansai Photon Science Institute (KPSI), National Institutes for Quantum and Radiological Science and Technology (QST), Japan)

Room 303

Start End Session No. Title Speaker Description
11:00 11:30 ALPS14-C2-1
Invited
Current status of 10 PW laser and 100 PW laser project Yuxin Leng, Xiaoyan Liang, Ruxin Li, Zhizhan Xu
State Key Laboratory of High Field Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, China
We’ll report the new progress of implementing a 10PW laser facility, including the generation of a 5.4PW/24fs laser pulses from a Ti:Sapphire crystal based CPA laser system and the design of a 100PW laser system.
11:30 11:45 ALPS14-C2-2 Development of Cryogenically Cooled Helium Gas Circulation System for Cooling Active Medium of 100 J Class Laser Amplifier Yasuki Takeuchi1, Yoshio Mizuta1, Takashi Sekine, Takashi Kurita1, Masateru Kurata1, Yuma Hatano1, Takaaki Morita1, Yuki Kabeya1, Kazuki Kawai1, Yuki Muramatsu1, Takuto Iguchi1, Yoshinori Tamaoki1, Koichi Iyama1, Yujin Zheng1, Shigeki Tokita2, Junji Kawanaka2, Yoshinori Kato1
1Industrial Development Center, Central Research Laboratory, Hamamatsu Photonics K.K., Japan,
2Institute of Laser Engineering, Osaka University, Japan
1-kW class cryostat cooled He-gas flowing system to demonstrate cooling method of laser medium has been developed. A cooling capacity was estimated over 1.4 kW with mass flow rate of 100 g/s at 150 K.
11:45 12:00 ALPS14-C2-3 Development of a 10-J, 10-Hz Cryogenically-Cooled Yb:YAG Ceramics Active-MirrorLaser Amplifier System Takaaki Morita1, Takashi Sekine1, Yasuki Takeuchi1, Yuuma Hatano1, Takashi Kurita1, Yoshinori Tamaoki1, Koichi Iyama1, Yuki Kabeya1, Masateru Kurata1, Takuto Iguchi1, Yoshio Mizuta1, Kazuki Kawai1, Yuki Muramatsu1, Yoshinori Kato1, Shigeki Tokita2, Junji Kawanaka2
1Industrial Development Center, Central Research Laboratory, Hamamatsu Photonics K.K., Japan,
2Institute of Laser Engineering, Osaka University, Japan
A cryogenically cooled Yb:YAG ceramics active-mirror laser amplifier for 10-J at 10-Hz output laser system has been developed. A laser diode module with 25-kW peak power was tested as a pump source for this amplifier.
12:00 12:15 ALPS14-C2-4 High energy cryogenically cooled Yb:YAG/Cr:YAG microchip laser Xiaoyang Guo1,2, Shigeki Tokita1, Junji Kawanaka1
1Institute of Laser Engineering, Osaka University, Japan,
2 Department of Electronic Science and Engineering, Kyoto University, Japan
We have developed a diode pumped cryogenically cooled Yb:YAG/Cr:YAG passively Q-switched microchip laser. A maximum energy of 12.1 mJ with 3.7 MW peak power was obtained
12:15 12:30 ALPS14-C2-5 Heat Capacitive Active Mirror and Top-Cap Effect Ken-ichi Ueda1,2,3,4
1Institute for Laser Science, UEC-Tokyo,
2 Inst. Laser Engineering, Osaka Univ.,
3, Hamamatsu Photonics,
4 JST PRESTO
A novel concept “Heat Capacitive Active Mirror HCAM” has been developed for the plane wave generation without thermal-lens. HCAM design allows to keep the maximum temperature and thermal-lens-effect in the same level to the thin disk laser without top-cap.
12:30 13:00 Break

ALPS15-F1: Terahertz Photonics 1
Chair: Takashi Notake(Teraphotonics Team, RIKEN, Japan)

Room 511+512

Start End Session No. Title Speaker Description
11:00 11:30 ALPS15-F1-1
Invited
Liquid Crystal Based Devices for THz Applications Lei Wang1, Makoto Nakajima2, Yanqing Lu3
1College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, China,
2Institute of Laser Engineering, Osaka University, Japan,
3College of Engineering and Applied Sciences, Nanjing University, China
We first developed a large birefringence liquid crystal material in terahertz range. Then broadband tunable terahertz waveplate driven with porous graphene and graphene-assisted high efficiency tunable terahertz metamaterial absorber using this material were demonstrated.
11:30 11:45 ALPS15-F1-2 Liquid phase growth of Ge doped GaSe and GaSe1-xTex bulk crystals at low temperature for highly efficient THz wave source Yohei Sato, Chao Tang, Tadao Tanabe, Yutaka Oyama
Department of materials science, Tohoku University, Japan
In order to efficiently generate THz wave, GaSe crystal is grown by low temperature liquid phase growth. Ge doped GaSe and GaSe1-xTex crystals are grown for improvement of transparency and mechanical strength, respectively.
11:45 12:00 ALPS15-F1-3 Laser-matter interaction in picosecond pulsed second-harmonic generation by periodically poled LiTaO3: Experiment and theory Oleg A. Louchev, Satoshi Wada
Center for Advanced Photonics, RIKEN, Japan
We present results of combined experimental-theoretical study of laser-matter interaction in picosecond pulsed second-harmonic generation by periodically-poled LiTaO3 crystal. Modified two-temperature excitation-relaxation model allows exact simulation of laser excitation and after-pulse relaxation continuing ≈50 ps.
12:00 12:15 ALPS15-F1-4 Efficient Terahertz Emission from the Co/Pt Ferromagnetic Heterostructure Based on Inverse Spin Hall Effect Hongsong Qiu, Kosaku Kato, Kazumasa Hirota, Nobuhiko Sarakura, Masashi Yoshimura, Makoto Nakajima
Institute of Laser Engineering, Osaka University, Japan
We demonstrated new efficient terahertz emitter of Co/Pt heterostructure due to inverse spin Hall effect. The radiation mechanism was investigated in detail and new model which includes the effect of spin diffusion length was proposed.

ALPSp: Poster Session

Exhibition Hall A

Start End Session No. Title Speaker Description
13:00 14:30 ALPSp-1 Vertically-oriented Graphene for Field-Effect Transistor Photodetector Jiawei Yang, Baolu Guan
Key Laboratory of Optoelectronics Technology, Ministry of Education, Faculty of Information Technology, Beijing University of Technology, China
In this paper, a field-effect transistor (FET) photodetector is demonstrated using vertically-oriented graphene sheets grown on the glass substrate, and the corresponding responsivity can reach 0.47A/W.
ALPSp-2 Structure of non-temperable low-E glass determined by synchrotron radiation Sang Joon Park1, Hyung Wook Choi2, Samgmo Kim2, Chung Wung Bark2
1Dept. Chemical and Biological Engineering, Gachon University, Korea,
2Dept. Electrical Engineering, Gachon University, Korea
By using laser annealing, we found the enhancement of low-E properties and the reduction of unit cell volume was obverted rather than the reduction of FWHM of Ag(111) on the metal layer.
ALPSp-3 SERS on Antirabbit IgG: Preliminary results Juan Carlos Martínez-Espinosa1, Teodoro Córdova-Fraga2, Gustavo Basurto-Islas2, Octavio Jimenez-Gonzalez2, Jacqueline Torres-Ramirez1, Ana Pamela Andrade-Pérez1, Jesús Bernal-Alvarado2, Angélica Hernández-Rayas2, Mauricio Sánchez-Barajas3
1Instituto Politécnico Nacional-UPIIG, México,
2Departamento de Ingeniería Física – DCI, Universidad de Guanajuato campus León, México,
3Hospital General de Zona con Medicina Familiar No 21 León Sur, Universidad de Guanajuato campus León., México
In this work we present preliminary results about the Surface enhanced Raman spectroscopy of theGoat IgG antirabbit antigen. We suggest continuing with this protocol by using others antigens forcancer study.
ALPSp-4 High gain single crystal fiber amplifier for hybrid femtosecond laser system Elena Sall, Sergey Chizhov, Byunghak Lee, Bosu Jeong, Jun Wan Kim, Duchang Heo, Chur Kim, Seol Won Park, Guang-Hoon Kim
Korea Electrotechnology Research Institute, Korea
We report a comparative study of femtosecond pulses amplification in hybrid laser system with different single crystal fiber (SCF) amplifier modules. Two SCF modules from Fibercryst and Shasta Crystals were tested in double-pass scheme. High gain 71 and 62 respectively were achieved.
ALPSp-5 Longitudinally Excited CO2 Laser Driven by Fast-High Voltage Solid State Switch Noor Shahira binti Masroon1, Shigeyasu Ohashi1, Masaya Tei1, Miyu Tanaka1, Kazuyuki Uno2, Hitoshi Nakano1
1Kindai University, Japan,
2University of Yamanashi, Japan
Longitudinally excited CO2 laser driven by fast-high voltage solid state switch has been developed, which consists of avalanche transistor circuit and series-connected of IGBTs. Simple, compact and affordable gas laser has been realized.
ALPSp-6 Development of Nanosecond Pump Source for Optically Synchronized OPCPA Yasuhiro Miyasaka, Hiromitsu Kiriyama, Maki Kishimoto, Michiaki Mori, Masaki Kando, Kiminori Kondo
Kansai Photon Science Institute (KPSI), National Institutes for Quantum and Radiological Science and Technology (QST), Japan
We are developing a nanosecond green laser from Ti:sapphire oscillator pulses for reducing timing jitter of OPCPA. 1064nm pulses are generated by spectrum extension and amplified to 15mJ in LD-pumped regenerative amplifier at 10Hz.
ALPSp-7 Reducing amplified spontaneous emission of a cryogenic disk amplifier through geometrical optimization of the gain medium Reza Amani1, Jan Cvrček1, Jitka Černohorská1, Martin Smrž1, Akira Endo1, Tomáš Mocek1
1HiLASE Centre, Institute of Physics, Czech Academy of Sciences, Czech Republic,
2Czech Technical University in Prague, Czech Republic
We report geometrical optimization of a cryogenic Yb:YAG disk towards reducing amplified spontaneous emission (ASE) in a 100 mJ, 1 kHz chirped pulse amplification chain with potential scalability to a pulse energy beyond 1 J.
ALPSp-8 Temperature Dependence Evaluation of Absorption in YAG Cladding Materials for High Power Solid-State Lasers Koichi Hamamoto1, Shigeki Tokita1, Hidetsugu Yoshida1, Noriaki Miyanaga1, Junji Kawanaka1
1Institute of Laser Engineering, Osaka University, Japan,
2Mitsubishi Heavy Industries, Ltd., Japan
To suppress parasitic oscillation or amplified spontaneous emission in high power lasers, gain material with cladding is used. We evaluated temperature dependence of absorption properties of some YAG ceramics cladding materials.
ALPSp-9 Research of Diamond Transmission Gratings Used for of High Power Laser Pulse Compression Shuwei Fan, Tianfei Zhu, Hongxing Wang
Institute of Wide Band Gap Semiconductors, School of Electronics and Information Engineering, Xi’an Jiaotong University, China
The diamond transmission grating is designed based on rigorous coupled-wave theory. The simulation results demonstrate that the highest diffraction efficiency was over 99% at wavelength 800nm. Studies show the design has a larger process tolerance.
ALPSp-10 Sub-100-fs Pulse Generation from a Tm,Ho:CALYO Laser Mode-Locked by SWCNTs Yongguang Zhao1, Yicheng Wang1, Zhongben Pan1, 3, Ji Eun Bae4, Sun Young Choi4, Fabian Rotermund4, Wei Zhou2, Xiaodong Xu2, Deyuan Shen2, Jun Xu5, Xavier Mateos1, 6, Pavel Loiko7, Uwe Griebner1, Valentin Petrov1
1Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Germany,
2Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, China,
3Institute of Chemical Materials, China Academy of Engineering Physics, China,
4Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Korea,
5School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, China,
6Física i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS, Dept. Química Física i Inòrganica, Universitat Rovira i Virgili (URV), Spain,
7ITMO University, Russia
We report on a mode-locked Tm,Ho:CALYO laser employing SWCNTs as a saturable absorber. Transform-limited 96-fs pulses are generated at ~2077 nm for a repetition rate of ~82.5 MHz corresponding to an average output power of 54 mW.
ALPSp-11 177 fs Pulses From Kerr-Lens Mode-Locked Yb:Lu2O3 Ceramic Thin-Disk Laser Shotaro Kitajima1, Akira Shirakawa1, Hideki Yagi2, Takagimi Yanagitani2
1Institute for Laser Science, University of Electro-Communications, Japan,
2Takuma Works, Konoshima Chemical Co., Ltd., Japan
The first Kerr-lens mode-locked Yb:Lu2O3 ceramic thin-disk laser was demonstrated. The shortest pulse duration was 177 fs with 3.2 W output power. The output power of 17 W with 588 fs pulses was also demonstrated.
ALPSp-12 Measurement of Carrier Dynamics of the Graphite by Time-Resolved ARPES Kento Toume1, 2, Katsuya Oguri1, Hiroki Mashiko1, Keiko Kato1, Yoshiaki Sekine1, Hiroki Hibino, 1, 3, Akira Suda2, Hideki Gotoh1
1NTT Basic Research Laboratories, Japan,
2Tokyo University of Science, Japan,
3Kwansei Gakuin University, Japan
We demonstrate the Tr-ARPES based on the high-order harmonic source with sub-10 fs pulse duration. We measured the Tr-ARPES spectra at the Dirac point of the graphite at various time delays.
ALPSp-13 Electron Temperature of High-Pressure Argon Plasma by Focusing Femtosecond Laser Kohsuke Tsuchida, Norio Tsuda, Jun Yamada
Aichi Insitute of Technology, Japan
The electron temperature of high-pressure argon plasma generated by the femtosecond laser is obtained from the plasma emission by two methods. The measurement result and the theoretical calculation result are compared.
ALPSp-14 Patterning Oxidation of Copper Substrate by Femtosecond Laser Irradiation Xi Yu1, Masaaki Sudo2, Fumihiro Itoigawa1, Shingo Ono1
1Nagoya Institute of Technology, Japan,
2IMRA America Inc., Japan
Patterning oxidation of copper substrate was performed by irradiating femtosecond laser pulses to surface of copper substrate. Shape transformation was observed by SEM, CLSM. Formation of copper oxide was confirmed by Raman, EDX, and XRD.
ALPSp-15 Optical Properties of Saturable Absorber for Temporal Contrast Improvement of Ultra-High Intensity Laser Koichi Ogura, Yasuhiro Miyasaka, Yuji Fukuda, Akito Sagisaka, Alexander S. Pirozhkov, Hiromitsu Kiriyama
Kansai Photo Science Institute, National Institutes for Quantum and Radiological Science and Technology, Japan
We report on evaluation of optical properties of saturable absorber, including damage threshold, transmittance efficiency, transmission spectral bandwidth, beam profile and long-term operation for temporal contrast improvement using saturable absorber after compressor.
ALPSp-16 Polarization and Laser Properties of Resonators with Corner-Cube and Axicon Retro-Reflectors Haik Chosrowjan1, Seiji Taniguchi1, Hidetsugu Yoshida2, Noriaki Miyanaga2
1Institute for Laser Technology, c/o Technical Research Center, Kansai Electric Power Company, Japan,
2Institute of Laser Engineering, Osaka University, Japan
Polarization properties from CCR and AL retro-reflected beams have been studied. Cryogenic Yb:YAG laser output characteristics when a flat mirror, CCR or AL is used as a high-reflection element in a resonator, have been elucidated.
ALPSp-17 Amplification Property of Ce/Cr/Nd:YAG Ceramic Laser Using White-light Pump Source Taku Saiki1, T. Nakamachi1, T. Hayashi1, R. Matsushita1, T. Ichiuji1, H. Furuse2, S. Motokoshi4, Y. Fujimoto3, M. Nakatsuka3, 4
1Department of Electrical and Electronic Engineering, Faculty of Engineering Science, Kansai University, Japan,
2Kitami Institute of Technology, Japan,
3Institute of Laser Engineering, Osaka University, Japan,
4Institute for Laser Technology, Japan
Effective fluorescence lifetime of Nd ion for Ce3+/Cr3+/Nd:YAG ceramic was prolonged by increasing the temperature of the ceramic laser material owing to cross-relaxation effect. The ceramic laser material has worked as a CW laser amplifier.
ALPSp-18 White-Light Whispering-Gallery-Mode Lasing from Lanthanide-Doped Upconversion NaYF4 Hexagonal Microrods Ting Wang1, Huan Yu2, Chun kit Siu1, Jianbei Qiu2, Xuhui Xu1, Siu Fung Yu1
1Department of Applied Physics, The Hong Kong Polytechnic University, China,
2College of Materials Science and Engineering, Kunming University of Science and Technology, China
Through the proper tuning of sensitizer (Yb3+) and activators (Er3+, Tm3+) concentration in the host matrix, we realize white-light lasing from a Yb3+-Er3+-Tm3+ tri-doped hexagonal β-NaYF4 microrod under near-infrared excitation at room temperature.
ALPSp-19 Assessment on Power-scaling of Ti:sapphire Lasers Pumped by Blue-diode Lasers Naoto Sugiyama, Hiroki Tanaka, Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
Kerr-lens mode-locking of direct-diode-pumped Ti:sapphire laser is demonstrated using 478- and 520-nm LDs. The influence of the blue-pump-induced loss on Ti:sapphire lasers is measured.
ALPSp-20 Power scaling of a passively Q-switched diode-pumped Pr3+:YLF laser Shogo Fujita, Hiroki Tanaka, Naoto Sugiyama, Fumihiko Kannari
>Department of Electronics and Electrical Engineering, Keio University, Japan
We demonstrate a Pr3+:YLF laser with to 6.7- and 3.7-W output power at 640 and 607 nm, respectively. Passive Q-switching is also obtained using Cr4+:YAG and Co2+:MgAl2O4 saturable absorbers.
ALPSp-21 Development of compact and high efficient UV laser system Y. Fujimoto1, M. Nakahara2, P. Binun2, S. Motokoshi3, O. Ishii4, M. Watanabe4, M. Yamazaki5, T. Shinozaki2, T. Sato2, H. Yanomori2
1Chiba Institute of Technology, Department of Electrical and Electronic Engineering, Japan,
2Kimmon Koha co., Ltd., Japan,
3Institute of Laser Technology, Japan,
4Production Engineering Section, Optical Glass Production Department, Sumita Optical Glass, Inc., Japan,
5Glass Research Division, R&D Department, Sumita Optical Glass, Inc., Japan
This paper presents that we are developing a compact and high efficient continuous-wave UV laser system with a Pr-doped double-clad structured waterproof fluoro-aluminate glass fiber laser as a fundamental laser beam.
ALPSp-22 Compact pulsed Yb-doped fiber laser and intra-cavity cascaded Raman spectrum generation Yanrong Song, Zikai Dong, Runqin Xu, Jinrong Tian
College of Applied Sciences, Beijing University of Technology, China
A compact mode locked Yb-doped fiber laser is demonstrated withnonlinear polarization rotation technique.There are no physical filter and polarization controller. A broadband continuum spectrum is generated by intra-cavity cascaded Raman scattering effect.
ALPSp-23 Off-peak Raman fiber laser at the wavelength of 1629 nm Anna Suzuki, Eisuke Fujita, Masaki Tokurakawa
Institute for Laser Science, University of Electro-Communications, Japan
We report Raman fiber laser at 1629 nm with the maximum output power of 2W and spectral bandwidth of 2 nm. The operation was very stable with output power fluctuation of less than 1%.
ALPSp-24 Research on Ohmic contact of VCSEL based on Cr/ Au alloy of non-magnetic materials Yanling Guo, Baolu Guan
Laboratory of Optoelectronics Technology, Ministry of Education, Faculty of Information Technology, Beijing University of Technology, China
In this paper, the VCSEL based on the non-magnetic Cr/Au alloy eliminates the effect the magnetic sensitivity of the magnetic, and it has low ohmic contact resistivity of 2.5×10-6 ohmic cm2 and high reliability.
ALPSp-25 Clean pump generation for in-line phase sensitive amplification using carrier phase recovery and injection locking Masato Kato1, Takeshi Umeki2, Koji Enbutsu2, Masaki Asobe1
1Tokai University, Japan,
2NTT Device Technology Laboratories, NTT Corporation, Japan
Carrier phase of a QPSK signal was extracted by using multi-stage frequency mixing in a multiple QPM LiNbO3 waveguide. We demonstrate residual intensity modulation can be suppressed by using injection locking.
ALPSp-26 Terahertz Time Domain Spectroscopy for Radiative Eigenmodes in Metallic Slit Array Thanh Nhat Khoa Phan1, Dazhi Li2, Kosaku Kato1, Masahiko Tani3, Masashi Yoshimura1, Masaki Hashida4, Yanyu Wei5, Makoto Nakajima1
1Institute of Laser Engineering, Osaka University, Japan,
2Institute for Laser Technology, Japan,
3University of Fukui, Japan,
4Advanced Research Center for Beam Science, ICR, Kyoto University, Japan, 5School of Physical Electronics, University of Electronics Science and Technology of China, China
We studied the interaction between terahertz wave and the metallic slit array. Through calculation and experiment, we found various eigenmodes, which can help in improving the efficiency of Free Electron Laser based on Smith-Purcell effect.
ALPSp-27 Programmable Optical Linear Circuit using Wavelength-Division-Multiplexed Quantum States Akihito Omi, Aruto Hosaka, Masaya Tomita, Shintaro Niimura, Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
We propose a novel scheme of multistage quantum pulse gate realizing universal linear optical circuits. Arbitral mode mixing can be realized by 4-f optical loop system and sum frequency generation.
ALPSp-28 Modal Analysis and Characterization of Photon-Number Statistics of Supercontinuum laser Pulses Shintaro Niimura, Aruto Hosaka, Masaya Tomita, Akihito Omi, Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
We experimentally characterize second-order photon-number statistics in a supercontinuum pulse. By modal analysis of photon-number covariance matrix, we reveal mode structure of a supercontinuum pulse and find photon-number squeezed states from the noisy supercontinuum pulse.
ALPSp-29 Maker Fringe Measurements of Ultra-Precisely Processed N-Benzyl-2-Methyl-4-Nitroaniline Organic Crystal Takashi Notake1, Masahiro Takeda2, 3, Takuya Hosobata2, Yutaka Yamagata2, 3, Hiroaki Minamide1
1Teraphotonics Team, RIKEN, Japan,
2Ultrahigh Precision Optics Technology Team, RIKEN, Japan,
3Adavanced Manufacturing Support Team, RIKEN, Japan
An ultra-high-precision lathe is applied to process fragile organic BNA crystals precisely. Nonlinear optical coefficients and the associated dispersions of BNA can be measured accurately by using the precisely processed thin BNA slab samples.
ALPSp-30 Fabrication of 1 & 4 inch size transparent Nd:YAG ceramics and Laser Oscillation Yoshiki Yamazaki1, Makoto Mikami1, Yuichi Kozawa2, Shunichi Sato2
1JX Nippon Mining & Metals Corporation Isohara Works, Japan,
2Institute of Multidisciplinary Research for Advanced Matirials, Tohoku University, Japan
We fabricated Nd:YAG ceramics with 1 and 4 inch diameters. The YAG ceramics were highly transparent with the transmittance of 84% including surface reflection. Laser oscillation of the Nd:YAG ceramics was achieved.
ALPSp-31 High-efficiency ring beam converter with axicon mirrors Yuya Shimoji, Godai Miyaji
Department of Applied Physics, Tokyo University of Agriculture and Technology, Japan
We have designed and fabricated a new beam converter from a Gaussian beam to a ring beam, which can efficiently generate a nondiffracting beam.
ALPSp-32 High aspect ratio nanometer size channel machining with phase corrected femtosecond Bessel beams. Kosuke Iida, Yurina Michine, Hitoki Yoneda
Institute for Laser Science, University of Electro-Communications, Japan
High aspect channel formations with diameter in submicron range are obtained with ultra-short-pulse Bessel (UB) beam and phase controlled UB machining system.
ALPSp-33 Absorption Enhancement in Solar Cells with Metamaterial Perfect Absorbers Tomihisa Isegawa1, Takayuki Okamoto2, Wakana Kubo1
1Tokyo University of Agriculture and Technology, Japan,
2RIKEN, Japan
Organic thin-film solar cells with metamaterial perfect absorbers are investigated. Metamaterial perfect absorbers confine incident light into the photoelectric conversion layer, resulting in an increase of absorption by a factor of 18%.
ALPSp-34 Selective coherent anti-Stokes Raman scattering microscopy employing dual-wavelength nanofocused ultrafast plasmon pulses Keita Tomita, Yasuhiro Kojima, Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
We demonstrate selective CARS measurements of graphene and multi-walled carbon nanotubes with nanofocused SPP pulses at 800 and 400 nm using an aluminum tapered tip.
ALPSp-35 Optical gain of multi stacked InGaAs quantum dots using VSL method Keishiro Goshima1, Norio Tsuda1, Keisuke Inukai1, Takeru Amano2, Takeyoshi Sugaya2
1Electronics Engineering, Aichi Institute of Technology, Japan,
2National Institute of Advanced Industrial Science and Technology (AIST), Japan
A Quantum dot laser (QD laser) is expected to have a low threshold current density, high thermal stability, and high modal gain. In our study we carried out the optical gain of multi-stacked QDs different thin barrier layers using a variable stripe length (VSL) method. Optical gain increased with decreasing barrier layer due to quantum mechanical coupling.
ALPSp-36 Single-shot Ultrafast Imaging with Burst Pulses of 100-ps Interval Hirofumi Nemoto, Takakazu Suzuki, Yuki Yamaguchi, Ryohei Hida, Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
We generate frequency chirped 100-ps-interval pulse trains for ultrafast burst imaging. Employing those pulses to sequentially timed all-optical mapping photography utilizing spectral filtering (SF-STAMP), we realize single-shot burst imaging with sub-nanosecond time window.
ALPSp-37 Development of rigid-endoscope optical coherence tomography system using two-dimensional KTN optical scanner Masato Ohmi1, Eunjoo Choi1, Takayuki Komatsu2, Shogo Yagi2
1Course of Allied Health Science, Graduate School of Medicine, Osaka University, Japan,
2NTT Advance Technology Corporation, Japan
We developed novel rigid-endoscope OCT with KTN optical probe for a diagnosis in the orthopedic fields. System demonstrates that biological image was measured by using KTN scanner for having degree of freedom in sample arm.
ALPSp-38 Multifocal spectral-domain optical coherence tomography based on Bessel beam for Biological Imaging Luying Yi, Liqun Sun
State Key Laboratory of Precision Measurement Technology & Instruments, Department of Precission Instruments, Tsinghua University, China
The multifocal spectral-domain optical coherence tomography based on Bessel beam is proved not only to increase the depth of the imaging, but also to reduce the demand for high spectral resolution of spectrometer.
ALPSp-39 Velocity and Distance Simultaneous Measurement by Digital Processing of Self-Coupling Signal Keiichi Shibata, Noriio Tsuda, Jun Yamada
Aichi Institute of Technology, Japan
The simultaneous measurement sensor of distance and velocity by using self-coupling effect of the semiconductor laser has been studied. The velocity and distance can have been simultaneously measured by digital signal processing of self-coupling signal.
ALPSp-40 A Simplified Heterodyne Surface Plasmon Resonance Sensor Michihiro Uchiumi1, Fumiya Kai1, Ozora Ushijima1, Kohei Shimogama1, Kazuyoshi Koga1, Kyouichi Deki2, Nobuaki Tominaga2
1Inf. Syst. Crs, Div. of Hum. and Welfare Eng., Dept. Creative Eng., Natl Inst. Of Technol. Ariake Coll., Japan,
2Environ. Sci. Crs, Div. of Environ. and Energy Eng., Dept. Creative Eng., Natl Inst. Of Technol. Ariake Coll., Japan
We developed a simplified surface plasmon sensor using a stabilized transverse Zeeman He-Ne laser. It is shown that the surface plasmon sensor with a simple configuration is sensitive.
ALPSp-41 Spectroscopic Ellipsometry-based Biosensor for Monitoring Microalgae Growth Siti N. Alfath1, Riza A.N. Khasanah1, Asmida Herawati1, Edi Suharyadi1, Eko A. Suyono2, Iman Santoso1, Takeshi Kato3, Satoshi Iwata4
1Department of Physics, Universitas Gadjah Mada, Indonesia,
2Faculty of Biology, Universitas Gadjah Mada, Indonesia,
3Department of Electronics, Nagoya University, Japan,
4Institute of Materials and System for Sustainability, Nagoya University, Japan
Monitoring microalgae growth has been successfully measured by spectroscopic ellipsometry based biosensor on the surface of gold and chromium thin film. The investigation shows the phase difference increased during the growth, representing the population increased.
ALPSp-42 Bidirectional Mode-locked Er:fiber Laser with Two Semiconductor Saturable Absorber Mirrors Yuya Hata1, Yoshiaki Nakajima1, Kaoru Minoshima1, 2
1The University of Electro-Communications (UEC), Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan
We developed a bidirectional mode-locked Er:fiber laser with two semiconductor saturable absorber mirrors and nonlinear polarization rotation. A symmetrical cavity configuration performed remarkable broad optical spectra in both directions with high relative stability.
ALPSp-43 High-accuracy corrections of large and fast air refractive index fluctuations using two-color interferometry with optical frequency combs Yoshihisa Ikisawa1, Tomohiro Makino1, Yoshiaki Nakajima1, Guanhao Wu3, Kaoru Minoshima1, 2
1The University of Electro-Communications (UEC), Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan,
3Tsinghua University, China
We significantly extended the applicable range of corrections of environmental air refractive index variations using two-color interferometry with optical frequency combs. The developed technique will enhance the practical applicability of high-accuracy optical distance measurements.
ALPSp-44 10W amplification of 750-MHz Yb:fiber laser frequency comb for sub-100 fs pulse duration Hirotaka Ishii1, Bo Xu1, Yuxuan Ma1, 3, Isao Matsushima1, Yoshiaki Nakajima1, Thomas Schibli4, Zhigang Zhang3, Kaoru Minoshima1, 2
1Department of Engineering Science, Graduate School of Informatics, The University of Electro-Communications (UEC), Japan,
2Japan Science and Technology Agency (JST), ERATO MINOSHIMA Intelligent Optical Synthesizer (IOS) Project, Japan,
3State Key Laboratory of Advanced Optical Communication System and Networks, Peking University, China,
4Dep. of Physics, University of Colorado at Boulder, USA
We developed a polarization-maintaining high power fiber amplifier based on a 750-MHz self-referenced Yb:fiber frequency comb. An average output power of 10 W was achieved.
ALPSp-45 Dual-Comb Interferometry Based on Synthetic-Wavelength for High-Speed and High-Precision Distance Measurement Zebin Zhu1, Kai Ni2, Qian Zhou2, Guanhao Wu1, 2
1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precission Instruments, Tsinghua University, China,
2Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, China
We propose a dual-comb ranging system based on synthetic-wavelength interferometry. It can realize absolute distance measurement with ~2.7m ambiguity range, ~3nm precision within ~10ms averaging time.
ALPSp-46 Tunable single-frequency continuous-wave optical parametric oscillator in the near-IR and mid-IR Sophie Kröger1, Edlef Büttner2, Andreas Steiger3, Ralf Müller3
1Hochschule für Technik und Wirtschaft, Germany,
2APE Angewandte Physik & Elektronik GmbH, Germany,
3Physikalisch-Technische Bundesanstalt, Germany
A high power single-frequency continuous-wave optical parametric oscillator is presented; special compact resonator with new tuning concept.
ALPSp-47 Broadband achromatic metalens in the visible Mu Ku Chen1, Pin Chieh Wu1, Vin-Cent Su4, Hui-Hsin Hsiao3, Yi-Chieh Lai1, Hsin Yu Kuo1, Bo Han Chen1, Yu Han Chen1, Din Ping Tsai1, 2
1Research Center for Applied Sciences, Academia Sinica, Taiwan,
2Department of Physics, National Taiwan University, Taiwan,
3Institute of Biomedical Optomechatronics Taipei Medical University, Taiwan,
4Department of Electrical Engineering, National United University, Taiwan
We demonstrated a high efficiency GaN based achromatic metalens working in transmission type. The working wavelength is from 400 to 660 nm. For optical imaging, we show the full-colour images taken by our achromatic metalens.
ALPSp-48 Dependence of temporal Contrast on Optics Surface Roughness in the Stretcher and Compressor Hiromitsu Kiriyama1, Yuji, Mashiba1, Yasuhiro Miyasaka1, Makoto R. Asakawa2
1Kansai Photon Science Institute (KPSI), National Institutes for Quantum and Radiological Science and Technology (QST), Japan,
2Faculity of Science and Engineering, Kansai University, Japan
Surface roughness of tens of nanometers on stretcher and compressor optics causes random spectral phase noise, which reduces the temporal coherence of the main pulse and generates a noisy structure around the main pulse.
ALPSp-49 Surface Cleaning and Modification of Thin Target Films by CW laser for Laser-driven Heavy Ion Acceleration Kotaro Kondo1, Mamiko Nishiuchi1, Hironao Sakaki1, Nicholas P. Dover1, Hiromitsu Kiriyama1, Masahiko Ishino1, Takumi Miyahara1, Yukinobu Watanabe2, Masaki Hashida3, Mitsuhiro Kusaba4, Masaki Kando1, Kiminori Kondo1
1Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology (QST), Japan,
2Interdisciplinary Graduate School of Engineering Science, Kyushu University, Japan,
3Institute for Chemical Research, Kyoto University, Japan,
4Department of Electronics, Information and Communication Engineering, Osaka Sangyo University, Japan
A test bench has been developed for surface cleaning and modification of thin film targets by CW laser irradiation. QMS detects gas emissions during the irradiation and polyimide films are carbonized by irradiation in vacuum.
April 27 Fri.

ALPS16-F2: Terahertz Photonics 2
Chair: Oleg A. Louchev(Center for Advanced Photonics, RIKEN, Japan)

Room 511+512

Start End Session No. Title Speaker Description
9:15 9:45 ALPS16-F2-1
Invited
Strong dc Precursors of Intense Laser Pulses in Electro-Optic Crystals Michael I. Bakunov1, Alexey V. Maslov1, Maxim V. Tsarev1, Evgeny S. Efimenko2, Sergey A. Sychugin1
1University of Nizhny Novgorod, Russia,
2Institute of Applied Physics, Russian Academy of Sciences, Russia
We show that simultaneous optical rectification and multiphoton absorption of an ultrashort laser pulse in an electro-optic crystal can generate a strong dc electromagnetic precursor ahead of the laser pulse.
9:45 10:00 ALPS16-F2-2 Effects of delayed feedback rates on THz wave generation using laser chaos Fumiyoshi Kuwashima1, Takuya Shirao1, Kazuyuki Iwao1, Naoya Sakaue1, Siori Gouda1, Takurou Sirasaki1, Masahiko Tani2, Kazuyoshi Kurihara3, Kohji Yamamoto2, Osamu Morikawa4, Hideaki Kitahara2, Makoto Nakajima5
1Department of Electrical and Electronic Engineering, Fukui University of Technology, Japan,
2Research Center for Development of Far-Infrared Region, University of Fukui, Japan,
3Fac. of Educ., Univ. of Fukui, Japan,
4Chair of Liberal Arts, Japan Coast Guard Academy, Japan,
5Institute of Laser engineering, Osaka Univ., Japan
The generation of a stable THz wave is investigated from a photoconductive antenna excited using a chaotic oscillation in multimode semiconductor laser with optical delayed feedback by an external mirror.
10:00 10:15 ALPS16-F2-3 Resonant tunnelling diodes versus semiconductor laser with feedback: confronting their oscillating dynamics Andreas Karsaklian Dal Bosco1, Safumi Suzuki2, Masahiro Asada2, Hiroaki Minamide1
1RIKEN Center for Advanced Photonics, Tera-Photonics Research Team, Japan,
2Tokyo Institute of Technology, Department of Electrical and Electronic Engineering, Japan
We propose a confrontation of the dynamical properties of oscillating dynamics observed in Resonant Tunnelling Diodes (RTD) and semiconductor lasers subjected to feedback in terms of frequency distribution and evolution with several experimental parameters.
10:15 10:30 ALPS16-F2-4 High-speed measurement of terahertz waveform using Yb-doped fiber laser Masaaki Tsubouchi, Keisuke Nagashima
National Institutes for Quantum and Radiological Science and Technology (QST), Kansai Photon Science Institute (KPSI), Japan
We have realized high-speed measurement of the terahertz (THz) waveform with the 100 kHz Yb-doped fiber laser for intense THz light generation and the vibrating retroreflector for fast scan of the optical delay.
10:30 11:00 Break

ALPS17-C3: Ultrafast Phenomena
Chair: Hiroki Mashiko(NTT Basic Research Laboratories, Japan)

Room 511+512

Start End Session No. Title Speaker Description
11:00 11:15 ALPS17-C3-1 Complete characterization of an optical waveform by luminescence from gas plasma Nariyuki Saito, Nobuhisa Ishii, Teruto Kanai, Jiro Itatani
The Institute for Solid State Physics, The University of Tokyo, Japan
We propose and demonstrate a new all-optical technique for complete waveform characterization of optical pulses using luminescence from gas plasma, which is based on simple physics and an easy setup.
11:15 11:45 ALPS17-C3-2
Invited
Femtosecond XUV Absorption Spectroscopy Elucidates the Origins of Multimode Vibrational Coherences Induced by Intense Laser Fields Zhi-Heng Loh
Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
Femtosecond XUV absorption spectroscopy is used to investigate vibrational coherences created in neutral and ionized iodomethane by intense laser pulses. Contributions to wave packet generation from bond softening, R-selective depletion, and displacive excitation are resolved.
11:45 12:30 Award Ceremony &
Closing Remarks
Fumihiko Kannari
Department of Electronics and Electrical Engineering, Keio University, Japan
PAGETOP