学会発表（国外）
M. Okano, K. Suyama, A. Wada, and S. Tanaka, "Correction Of The Thermal Phase Shift For Precise Assessment Of Material Parameters In Terahertz Time-domain Spectroscopy," 50th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2025) (Aalto University, Espoo, Finland, Aug. 21, 2025) TH-P-42 (poster)
S. Tanaka, M. Okano, and A. Wada, "Application of PM-EDF ring laser with cascaded-chirped LPG to intensity-modulation based acoustic sensing," 29th International Conference on Optical Fiber Sensors (OFS-29) (Super Book Arena, Porto, Portugal, May 30, 2025) F1.4 (oral)
S. Tanaka, K. Fukushima, N. Moronaga, M. Okano, and A. Wada, "Highly Stable Operation of EDF Laser-Based Sensor with Double-Pass Cascaded-Chirped LPG by Applying PM-Ring Cavity Configuration," 28th International Conference on Optical Fiber Sensors (OFS-28) (ACT CITY, Hamamatsu, Japan, Nov. 23, 2023) Th6.45 (poster)
A. Wada, M. Okano, and S. Tanaka, "Solid-vibration measurement utilizing current modulated laser diode and Fabry-Perot interferometric sensors composed of low reflective fiber Bragg grating in a polarization-maintaining fiber," 28th International Conference on Optical Fiber Sensors (OFS-28) (ACT CITY, Hamamatsu, Japan, Nov. 21, 2023) Tu3.90 (poster)
D. Nishikawa, K. Maezawa, S. Fujii, M. Okano, S. Watanabe, "Ultrafast time-resolved spectroscopy of spin precession by an asynchronous optical sampling based on a dual-comb system," IEEE Intermag 2023 (Sendai International Center, Sendai, Japan, May 16, 2023) SOA-09 (oral)
A. Iwasaki, D. Nishikawa, S. Tateno, M. Okano, K. Yamanoi, Y. Nozaki, and S. Watanabe, "Quantitative Measurement of Absolute Displacement of Surface Acoustic Wave with ~26 pm Axial Resolution," CLEO 2022 (Virtual & San Jose McEnery Convention Center, San Jose, California, USA, May. 15, 2022) SS1A.8 (oral)
K. Mizuta, M. Okano, T. Morimoto, S. Ata, and S. Watanabe, "Deformation-Induced Structural Changes Of Carbon Black Fillers In Rubbers Investigated By Terahertz Polarization Spectroscopy," 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2021) (Virtual conference, Aug. 29 - Sept. 3, 2021) Tu-AM-2-2 (oral)
M. Okano, Y. Wang, J. Hirata, T. Shimizu, G. Isoyama, M. Nakajima, and S. Watanabe, "Intense-Terahertz-Wave-Induced Crystallization in Poly(lactic) acid by Terahertz Free-Electron Laser," 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2021) (Virtual conference, Aug. 29 - Sept. 3, 2021) MO-PO-39 (poster)
K. A. Sumihara, S. Okubo, M. Okano, H. Inaba, and S. Watanabe, "Ultra-Precise Complex Refractive Index Measurement Using Dual-Comb Spectroscopy," CLEO 2021 (Virtual conference, May. 10, 2021) SM1G.7 (oral)
J. Hirata, N. Kurokawa, M. Okano, A. Hotta, and S. Watanabe, "Evaluation The Hydrogen Bonding in Stereocomplex Poly(lactic acid) by Terahertz Spectroscopy," APS March Meeting 2021 (Virtual conference, Mar. 18, 2021) R03.00013 (oral)
M. Okano, T. Takahashi, and S. Watanabe, "Coherent control of higher-order spin precession modes in ferromagnetic permalloy thin films by double pulse excitation," CLEO 2020 (Virtual conference, USA, May 11, 2020) FM4D.6 (oral)
K. A. Sumihara, S. Okubo, K. Oguchi, M. Okano, H. Inaba, and S. Watanabe, "Development of Polarization-sensitive Dual-comb Spectroscopy for Anisotropic Materials," CLEO/EUROPE-EQEC 2019 (Munich, Germany, Jun. 23-27, 2019) (poster)
M. Nakamura, M. Okano, and S. Watanabe, "Real-Time Observation of Thermally-Induced Structural Changes of Poly(Lactic Acid) Thin Film by Terahertz Spectroscopy," 2018 MRS Fall Meeting (Boston, USA, Nov. 25-30, 2018) (poster)
T. Tsujimoto, A. Moriwaki, M. Fujii, M. Okano, and S. Watanabe, "Optical Response Change Of Black Rubbers Under Cyclic Deformation Investigated By Terahertz Polarization Spectroscopy," 43rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW THz-2018) (Nagoya, Japan, Sept. 9-14, 2018) (oral)
A. Moriwaki, M. Okano, and S. Watanabe, "Internal Strain Imaging of Visibly-Opaque Black Rubbers by Terahertz Polarization Spectroscopy," The 13th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2018) (Hong Kong, China, July 29 - Aug. 3, 2018) Th4K.4 (oral)
K. Suzuki, K. Oguchi, M. Okano, and S. Watanabe, "Electric-Field Vector Imaging of Terahertz Surface Waves on an Indium tin Oxide Thin Film," The 13th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2018) (Hong Kong, China, July 29 - Aug. 3, 2018) W3A.68 (poster)
M. Okano and S. Watanabe, "Observation of strain-induced anisotropic percolative conduction in rubber-filler composites by terahertz polarization spectroscopy," The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018) (Nara, Japan, July 9, 2018) O 04(oral)
H. Shibata, M. Okano, and S. Watanabe, "Control of spin precession motion in ferromagnetic thin films by double-pump experiments," 62nd Annual Conference on Magnetism and Magnetic Materials (Pittsburgh, PA, USA, Nov. 6-10, 2017) (oral)
M. Okano, M. Fujii, and S. Watanabe, "Large optical anisotropy in deformed rubber composites with conductive fillers revealed by terahertz polarization spectroscopy," JSAP-OSA Joint Symposia 2017 (Fukuoka, Japan, Sept. 5-8, 2017) 7p-A409-5 (oral)
K. Suzuki, K. Oguchi, M. Okano, and S. Watanabe, "Development of terahertz electric-field vector imaging system using a rotating polarizer," JSAP-OSA Joint Symposia 2017 (Fukuoka, Japan, Sept. 5-8, 2017) 6a-PA3-18 (poster)
M. Okano and S. Watanabe, "Assessment of large internal optical anisotropy in fluoroelastomer with carbon black fillers using a polarization sensitive terahertz spectroscopy," Optical Terahertz Science and Technology (OTST 2017) (London, UK, Apr. 2-7. 2017)(poster)
K. Oguchi, M. Okano, and S. Watanabe, "Retrieval of elliptically-polarized terahertz electric-field pulse shapes by electro-optic sampling,"
Optical Terahertz Science and Technology (OTST 2017) (London, UK, Apr. 2-7. 2017) (poster)K. A. Sumihara, S. Okubo, M. Okano, H. Inaba, and S. Watanabe, "Development of Precise Polarization Measurement System Using Dual-comb Spectroscopy," 2016 Light, Energy and the Environment Congress, Fourier Transform Spectroscopy (FTS) (Leipzig, Germany, Nov. 14-17, 2016) (oral)
S. Nakayama, M. Okano, Y. Nozaki, and S. Watanabe, "Magneto-Optic Kerr Effect CCD Imaging with Polarization Modulation Technique"
61st Annual Conference on Magnetism and Magnetic Materials (New Orleans, Louisiana, USA, Oct. 31-Nov. 4, 2016) (oral)H. Iwasaki, M. Okano, N. Komatsubara, M. Nakamura, A. Moriwaki, H. Sato, and S. Watanabe, "Birefringent properties of poly-lactic acid at terahertz range," 41st International Conference on Infrared, Millimeter and Terahertz Waves (Copenhagen, Denmark, Sept. 25-30, 2016) (poster)
T. Handa, M. Okano, D. M. Tex, A. Shimazaki, T. Aharen, A. Wakamiya, and Y. Kanemitsu, "Carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells studied by electroluminescence spectroscopy," SPIE Photonics West 2016 (San Francisco, USA, Feb. 13-18, 2016) (oral)
T. Handa, M. Okano, M. Endo, T. Aharen, A. Wakamiya, and Y. Kanemitsu, "Electroluminescence and Photoluminescence Imaging Spectroscopy of CH3NH3PbI3 Solar Cells: Degradation Mechanism," 1st International Conference on Perovskite Solar Cells and Optoelectronics (PSCO-2015) (Lausanne, Switzerland, Sept. 27 - 29, 2015)(poster)
M. Sakamoto, M. Okano, M. Saruyama, Y.-G. So, K. Kimoto, Y. Kanemitsu, T. Teranishi, "Photo-induced Carrier Dynamics of CuInS2/CdS Tetrapod Nanocrystal," 27th International Conference on Photochemistry (ICP2015) (Jeju, Korea, June 28 - July 3, 2015)(oral)
M. Sakamoto, M. Okano, M. Saruyama, Y. Kanemitsu, T. Teranishi, "Synthesis and Photo-induced Carrier Dynamics of CdS/CdTe Nanopencils," 2015 Korean-Japan Bilateral Symposium on Frontier Photoscience (2015KJFP) (Jeju, Korea, June 26 - 28, 2015).(oral) (invited)
T. Nishihara, M. Okano, Y. Yamada, and Y. Kanemitsu, "Recombination dynamics of the lowest-energy excitons in single-walled carbon nanotubes under resonant and nonresonant excitation," Eighth International Conference on Molecular Electronics and Bioelectronics (M&BE8) (Tower Hall Funabori, Tokyo, Japan, June 22 - 24, 2015)(oral)
L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Optoelectronic properties of Cu2ZnSnS4 single crystals revealed by optical time-resolved spectroscopy," 42nd IEEE Photovoltaic Specialists Conference (New Orleans, LA, USA, June 14 - 19, 2015) (poster)
M. Okano, Y. Takabayashi, T. Sakurai, K. Akimoto, H. Shibata, S. Niki, and Y. Kanemitsu, "Ultrafast Photocarrier Dynamics in Cu(In,Ga)Se2 Thin Films Studied Using Optical Spectroscopy Techniques," 2015 MRS Spring meeting, (San Francisco, USA, Apr. 6-10, 2015) (oral)
L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Optoelectronic Properties of Undoped and Na-doped Cu2ZnSnS4 single crystals," The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6) (Kyoto, Japan, Nov. 23-27, 2014) (poster)
M. Okano Y. Takabayashi, T. Sakurai, K. Akimoto, H. Shibata, S. Niki, and Y. Kanemitsu, "Photocarrier Dynamics of Cu(In,Ga)Se2 Thin Films Revealed by Time-resolved Photoluminescence and Transient Absorption Measurements," The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6) (Kyoto, Japan, Nov. 23-27, 2014) (poster)
M. Okano and Y. Kanemitsu, "Photocarrier dynamics in CIGS, CZTS and related materials revealed by ultrafast optical spectroscopy," 19th International Conference on Ternary and Multinary Compounds (ICTMC-19) (Niigata, Japan, Sept. 1-5, 2014) (oral) (invited)
M. Okano M. Sakamoto, T. Teranishi, and Y. Kanemitsu, "Charge separation dynamics in type-II CdS/CdTe heteronanopencils revealed by femtosecond pump-probe spectroscopy," 30 years of colloidal quantum dots (Paris, France, May 26-28, 2014) (poster)
L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Temperature dependence of photoluminescence dynamics in Cu2ZnSnS4 single crystals," 2014 MRS Spring meeting (San Francisco, USA, Apr. 21-25, 2014) (oral)
L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Photocarrier dynamics in Cu2ZnSnS4 single crystals: The role of band tail states," 2014 MRS Spring meeting (San Francisco, USA, Apr. 21-25, 2014) (poster)
M. Okano and Y. Kanemitsu, "Spectroscopy of higher exciton states in single-walled carbon nanotubes," International Conference on Small Science (ICSS 2013) (Las Vegas, USA, Dec. 15-18, 2013) (oral) (invited)
M. Okano, T. Nishihara, Y. Kimoto, T. Ihara, Y. Yamada, and Y. Kanemitsu, "Hole-doping modulates electronic structures of single-walled carbon nanotubes," 2013 JSAP-MRS Joint Symposia (Kyoto, Japan, Sept. 16-20, 2013) (oral)
Y. Yamada, T. Nishihara, M. Okano, and Y. Kanemitsu, "Quantized Exciton-hole Recombination in Hole-doped Single-walled Carbon Nanotubes," The 4th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2013) (Kanazawa, Japan, June 17-20, 2013) (oral)
T. Nishihara, M. Okano, Y. Yamada, and Y. Kanemitsu "Quantized Exciton Recombination Dynamics in Single-walled Carbon Nanotubes," The 7th International Conference on Nanophotonics/The 3rd Conference on Advances in Optoelectronics and Micro (ICNP/AOM 2013)(Hong Kong, China, May 19-23, 2013) (oral) (invited)
T. Nishihara, Y. Kimoto. M. Okano, Y. Yamada, and Y. Kanemitsu, "Exciton Decay Dynamics in Hole-Doped Single-Walled Carbon Nanotubes," 7th International Conference on Molecular Electronics and Bioelectronics (M&BE7)(Fukuoka, Japan, Mar. 17-19, 2013) (oral)
M. Okano, T. Nishihara, Y. Yamada, and Y. Kanemitsu, "Dynamics of Excitons and Trions in Semiconducting Carbon Nanotubes," SPIE Photonics West 2013 (San Francisco, USA, Feb. 2-7, 2013) (oral) (invited)
T. Nishihara, M. Okano, Y. Yamada, and Y. Kanemitsu, "Recombination dynamics of excitons and trions in hole-doped single-walled carbon nanotubes," 31st International Conference on the Physics of Semiconductors (ICPS2012)(Zurich, Switzerland, July 29 - Aug. 03, 2012) (poster)
M. Okano, Y. Kanemitsu, S. Chen, T. Mochizuki, M. Yoshita, H. Akiyama, L. N. Pfeiffer, and K. W. West, "Magneto-photoluminescence excitation spectroscopy in T-shaped GaAs quantum wires," 31st International Conference on the Physics of Semiconductors (ICPS2012)(Zurich, Switzerland, July 29 - Aug. 03, 2012) (poster)
Y. Kimoto, M. Okano, and Y. Kanemitsu, "Band-gap shrinkage in hole-doped single-walled carbon nanotubes," 31st International Conference on the Physics of Semiconductors (ICPS2012)(Zurich, Switzerland, July 29 - Aug. 03, 2012) (poster)
Y. Kanemitsu, M. Okano, T. Nishihara, S. Taguchi, and Y. Yamada, "Multicarrier Recombination Dynamics in Semiconductor Nanomaterials," Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications(ICOOPMA12)(Nara, JAPAN, June 03-07, 2012) (oral) (invited)
M. Okano and Y. Kanemitsu, "Mechanism of photoluminescence enhancement of single-walled carbon nanotubes by chemical doping," Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications(ICOOPMA12)(Nara, JAPAN, June 03-07, 2012) (oral)
T. Nishihara, M. Okano, Y. Yamada, and Y. Kanemitsu, "Exciton Recombination Dynamics in Hole-doped Single-walled Carbon Nanotubes," Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications(ICOOPMA12)(Nara, JAPAN, June 03-07, 2012) (oral)
T. Nishihara, M. Okano, and Y. Kanemitsu, "Dynamics of Excitons and Trions in Single-Walled Carbon Nanotubes," 221st ECS Meeting in Seattle (Washington, USA, May 06-10, 2012) (oral)(invited)
M. Yoshita, M. Okano, H. Akiyama, L. N. Pfeiffer, K. W. West, P. Huai, K. Kamide, K. Asano, and T. Ogawa, "Microscopic study on carrier-density-dependent gain characteristics in cleaved-edge overgrown T-shaped quantum-wire lasers," The 15th International Conference on Modulated Semiconductor structures (MSS-15) (Tallahassee, Florida, USA, July 25-29, 2011) (poster)
C. Kim, M. Okano, T. Mochizuki, M. Yoshita, S.Q. Chen, H. Akiyama, L. N. Pfeiffer, K. W. West, "T-shaped GaAs/AlGaAs Single Quantum Wire Laser by Arm-arm Current-Injection," Semiconductor Physics Divsion, The Korean Physical Society（KPS-87) (Daejeon Convention Center, Daejoen, South Korea, Apr. 13-15, 2011
M. Okano, R. Matsunaga, K. Matsuda, S. Masubuchi, K. Machida, and Y. Kanemitsu, "Raman Spectroscopy of Single- and Bi-layer Graphenes Synthesized by Alcohol Chemical Vapor Deposition," International Symposium on Molecular Nanotechnology (Nara, Japan, Dec. 1-2, 2010) (poster)
M. Yoshita, M. Okano, H. Akiyama, L. N. Pfeiffer, and K. W. West, "Optical waveguide-transmission spectroscopy of one-dimensional excitons in T-shaped quantum wires," The 30th International Conference on the Physics of Semiconductors (ICPS 2010) (Seoul, Korea, July 25-30, 2010) (oral)
M. Okano, M. Yoshita, H. Akiyama, L. N. Pfeiffer, and K. W. West, "Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers," The 9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials (EXCON'10) (Brisbane, Australia, July 11-16, 2010) (oral)
T. Fukushima, M. Ito, Y. Hijikata, H. Yaguchi, S. Yoshida, M. Okano, M. Yoshita, H. Akiyama, S. Kuboya, R. Katayama, and K. Onabe, "Photoluminescence from single isoelectronic traps in nitrogen delta-doped GaAs grown on GaAs(111)A," The 14th International Conference on Modulated Semiconductor Structures (MSS 14) (Kobe International Conference Center, Japan, July 19-24 2009) Tu-mP5
M. Yoshita, M. Okano, T. Ihara, H. Akiyama, P. Huai, T. Ogawa, L. N. Pfeiffer, and K. W. West, "Carrier-Density-Dependent Increase and Suppression of Optical Gain in T-Shaped Quantum-Wire Lasers," The 34th International Symposium on Compound Semiconductors (ISCS2007) (Kyoto Univ., Japan, October 15-18 2007) ThC P17 (poster)
H. Akiyama, M. Yoshita, Y. Hayamizu, S.-M. Liu, M. Okano, L. N. Pfeiffer, K. W. West, P. Huai, K. Asano, T. Ogawa, and C. Z. Ning, "Exciton-biexciton-plasma crossover and formation of optical gain in quantum wires," The 17th International Conference on Electronic Properties of Two-dimensional Systems (EP2DS 17) (Genoa, Italy, July 15-20 2007) WE-PE20 (poster)
M. Okano, S.-M. Liu, M. Yoshita, H. Akiyama, L. N. Pfeiffer, and K. W. West, "Current-injection T-shaped quantum wire lasers with perpendicular doping layers operating at 100 K," The 13th International Conference on Modulated Semiconductor Structures (MSS 13), (Genoa, Italy, July 15-20 2007) TU-PM71 (poster)
S.-M. Liu, M. Yoshita, M. Okano, T. Ihara, H. Itoh, H. Akiyama, L. N. Pfeiffer, K. W. West, and K. W. Baldwin, "Low-Threshold Current-Injection Single-Mode Lasing in T-Shaped Quantum Wires with Parallel Doping Layers," The Conference on Lasers and Electro-Optics (CLEO 2007) (Baltimore, USA, May 07, 2007) CMD5 (oral)
S.-M. Liu, M. Yoshita, M. Okano, H. Akiyama, L. N. Pfeiffer and K. W. West, "Current-injection lasing in T-shaped GaAs/AlGaAs quantum-wire lasers," 28th International Conference on the Physics of Semiconductors (ICPS 2006)（Vienna, Austria, July 24-28, 2006) TuA3o.2 (poster)
M. Okano, S.-M. Liu, M. Yoshita, T. Ihara, H. Itoh, H. Akiyama, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and O. Malis, "Current-injection T-shaped GaAs/AlGaAs quantum-wire lasers," The 2006 IEEE/LEOS Semiconductor Laser Workshop (Long Beach Convention Center, Long Beach, California, May 26, 2006) (informal meeting) (oral)