D. Nishikawa, K. Maezawa, S. Fujii, M. Okano, and S. Watanabe, "A two-color dual-comb system for time-resolved measurements of ultrafast magnetization dynamics using triggerless asynchronous optical sampling," Rev. Sci. Instrum. 94, 063003 (2023).

K. Fukushima, M. Okano, A. Wada, S. Tanaka, and F. Ito, "EDF laser displacement sensor based on bending characteristics of polarization-independent double-pass cascaded-chirped long-period fiber grating," IEICE Electron. Express 20, 20220496 (2023).

K. Fukushima, M. Okano, A. Wada, S. Tanaka, and F. Ito, "EDF sigma laser using double-pass cascaded-chirped long-period fiber grating with birefringence compensation effect and its application for strain measurement," IEICE Electron. Express 19, 20220394 (2022).

M. Okano and S. Watanabe, "Triggerless data acquisition in asynchronous optical-sampling terahertz time-domain spectroscopy based on dual-comb system," Opt. Express 30, 39613 (2022).

A. Iwasaki, D. Nishikawa,  M. Okano, S. Tateno, K. Yamanoi, Y. Nozaki, and S. Watanabe, "Temporal-offset dual-comb vibrometer with picometer axial precision," APL Photon. 7, 106101 (2022).

M. Nakagawa, M. Okano, and S. Watanabe, "Polarization-sensitive terahertz time-domain spectroscopy system without mechanical moving parts," Opt. Express 30, 29421 (2022).

K. Mizuta, M. Okano, T. Morimoto, S. Ata, and S. Watanabe, "Strain-induced irreversible change of the conductive network in a rubber/carbon-black composite revealed by polarization-resolved terahertz dielectric spectroscopy,"  Appl. Phys. Lett. 121, 024101 (2022).

K. A. Sumihara, S. Okubo, M. Okano, H. Inaba, and S. Watanabe, "Ultra-precise determination of thicknesses and refractive indices of optically thick dispersive materials by dual-comb spectroscopy," Opt. Express 30, 2734 (2022).

T. Fukuda, M. Okano, and S. Watanabe, "Interferogram-based determination of the absolute mode numbers of optical frequency combs in dual-comb spectroscopy," Opt. Express 29, 22214 (2021).

M. Okano*, T. Takahashi*, and S. Watanabe, "Ultrafast coherent control of higher-order spin waves in a NiFe thin film by double-pulse excitation," Appl. Phys. Lett. 117, 082407 (2020). (*equal contribution)

J. Hirata, N. Kurokawa, M. Okano, A. Hotta, and S. Watanabe, "Evaluation of Crystallinity and Hydrogen Bond Formation in Stereocomplex Poly(lactic acid) Films by Terahertz Time-Domain Spectroscopy," Macromolecules 53, 7171-7177 (2020).

K. A. Sumihara, S. Okubo, K. Oguchi, M. Okano, H. Inaba, and S. Watanabe, "Polarization-sensitive dual-comb spectroscopy with an electro-optic modulator for determination of anisotropic optical responses of materials," Opt. Express 27 35141-35165 (2019).

M. Nakamura, M. Okano, and S. Watanabe, "Real-Time Monitoring of Structural Changes in Poly(lactic acid) during Thermal Treatment by High-Speed Terahertz Time-Domain Spectroscopy for Nondestructive Inspection," ACS Appl. Polym. Mater. 1, 3008-3016 (2019).

K. Suzuki, K. Oguchi, Y. Monnai, M. Okano and S. Watanabe, "Spatio-temporal imaging of terahertz electric-field vectors: observation of polarization-dependent knife-edge diffraction," Appl. Phys. Express 12, 053001 (2019).

K. Oguchi, M. Okano and S. Watanabe, "Polarization-Sensitive Electro-Optic Sampling of Elliptically-Polarized Terahertz Pulses: Theoretical Description and Experimental Demonstration," Particles 2, 70-89 (2019). (invited)

M. Okano and S. Watanabe, "Internal Status of Visibly Opaque Black Rubbers Investigated by Terahertz Polarization Spectroscopy: Fundamentals and Applications," Polymers 11, 9 (2019) (selected as Feature paper). (invited)

M. Okano and S. Watanabe, "Inspection of internal filler alignment in visibly opaque carbon-black-rubber composites by terahertz polarization spectroscopy in reflection mode," Polym. Test. 72, 196 (2018).

H. Shibata, M. Okano, and S. Watanabe, "Ultrafast control of coherent spin precession in ferromagnetic thin films via thermal spin excitation processes induced by two-pulse laser excitation," Phys. Rev. B 97, 014438 (2018).

Y. Kanemitsu, M. Okano, L. Q. Phuong, and Y. Yamada, "Review - Light Emission from Thin Film Solar Cell Materials: An Emergent Infrared and Visible Light Emitter," ECS J. Solid State Sci. Technl. 7, R3102 (2018).

M. Okano, M. Fujii, and S. Watanabe, "Anisotropic percolation conduction in elastomer-carbon black composites investigated by polarization-sensitive terahertz time-domain spectroscopy," Appl. Phys. Lett. 111, 221902 (2017).

A. Moriwaki*, M. Okano*, and S. Watanabe, "Internal triaxial strain imaging of visibly opaque black rubbers with terahertz polarization spectroscopy," APL Photon. 2, 106101 (2017). (*equal contribution)

K. Oguchi, M. Okano, and S. Watanabe, "Retrieving the undistorted terahertz time-domain electric-field vector from the electro-optic effect," J. Opt. Soc. Am. B 34, 1946 (2017) (selected as Editor's pick).

H. Iwasaki, M. Nakamura, N. Komatsubara, M. Okano, M. Nakasako, H. Sato and S. Watanabe, "Controlled Terahertz Birefringence in Stretched Poly (lactic acid) Films Investigated by Terahertz Time-Domain Spectroscopy and Wide-Angle X-ray Scattering," J. Phys. Chem. B 121, 6951 (2017).

T. Nishihara, M. Okano, Y. Yamada, and Y. Kanemitsu, "Review - Photophysics of Trions in Single-Walled Carbon Nanotubes," ECS J. Solid State Sci. Technl. 6, M3062 (2017).

S. Nakayama, M. Okano, Y. Nozaki, and S. Watanabe, "Magneto-optic Kerr effect CCD imaging with polarization modulation technique," AIP Advances 7, 056802 (2017).

K. A. Sumihara, S. Okubo, M. Okano, H. Inaba, and S. Watanabe, "Polarization-sensitive dual-comb spectroscopy," J. Opt. Soc. Am. B 34, 154 (2017).

M. Okano and S. Watanabe, "Anisotropic optical response of optically opaque elastomers with conductive fillers as revealed by terahertz polarization spectroscopy," Sci. Rep. 6, 39079 (2016).

M. Sakamoto, K. Inoue, M. Okano, M. Saruyama, S. Kim, Y.-G. So, K. Kimoto, Y. Kanemitsu and T. Teranishi, "Light-stimulated carrier dynamics of CuInS2/CdS heterotetrapod nanocrystals," Nanoscale 8, 9517 (2016).

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," Proc. SPIE 9745, 97451I (2016).

K. Oguchi, H. Iwasaki, M. Okano, and S. Watanabe, "Polarization-sensitive electro-optic detection of terahertz wave using three different types of crystal symmetry: Toward broadband polarization spectroscopy," Appl. Phys. Lett. 108, 011105 (2016).

T. Nishihara, Y. Yamada, M. Okano, and Y. Kanemitsu, "Dynamics of the Lowest-Energy Excitons in Single-Walled Carbon Nanotubes under Resonant and Nonresonant Optical Excitation," J. Phys. Chem. C 119, 28654 (2015).

M. Okano, M. Endo, A. Wakamiya, M. Yoshita, H. Akiyama, and Y. Kanemitsu, "Degradation mechanism of perovskite CH3NH3PbI3 diode devices studied by electroluminescence and photoluminescence imaging spectroscopy," Appl. Phys. Express 8, 102302 (2015).

L. Q. Phuong, M. Okano, G. Yamashita, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Free-carrier dynamics and band tails in Cu2ZnSn(SxSe1-x)4: Evaluation of factors determining solar cell efficiency," Phys. Rev. B 92, 115204 (2015).

L. Q. Phuong, M. Okano, G. Yamashita, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Photocarrier dynamics in undoped and Na-doped Cu2ZnSnS4 single crystals revealed by ultrafast time-resolved terahertz spectroscopy," Appl. Phys. Express 8, 062303 (2015).

M. Okano, H. Hagiya, T. Sakurai, K. Akimoto, H. Shibata, S. Niki, and Y. Kanemitsu, "Individual identification of free hole and electron dynamics in CuIn1-xGaxSe2 thin films by simultaneous monitoring of two optical transitions," Appl. Phys. Lett. 106, 181903 (2015).

M. Okano, L. Q. Phuong, and Y. Kanemitsu, "Photocarrier dynamics in CIGS, CZTS, and related materials revealed by ultrafast optical spectroscopy," Phys. Status Solidi B 252, 1219 (2015).

M. Sakamoto, L. Chen, M. Okano, D. M. Tex, Y. Kanemitsu, and T. Teranishi, "Photoinduced Carrier Dynamics of Nearly Stoichiometric Oleylamine-Protected Copper Indium Sulfide Nanoparticles and Nanodisks," J. Phys. Chem. C 119, 11100 (2015).

T. Nishihara, H. Tahara, M. Okano, M. Ono, and Y. Kanemitsu, "Fast Dissociation and Reduced Auger Recombination of Multiple Excitons in Closely Packed PbS Nanocrystal Thin Films," J. Phys. Chem. Lett. 6, 1327 (2015).

L. Q. Phuong, M. Okano, Y. Yamada, G. Yamashita, T. Morimoto, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Ultrafast free-carrier dynamics in Cu2ZnSnS4 single crystals studied using femtosecond time-resolved optical spectroscopy," Appl. Phys. Lett. 105, 231902 (2014).

M. Okano, M. Sakamoto, T. Teranishi, and Y. Kanemitsu, "Assessment of Hot-Carrier Effects on Charge Separation in Type-II CdS/CdTe Heterostructured Nanorods," J. Phys. Chem. Lett. 5, 2951 (2014).

M. Sakamoto, K. Inoue, M. Saruyama, Y.-G. So, K. Kimoto, M. Okano, Y. Kanemitsu, and T. Teranishi, "Investigation on Photo-Induced Charge Separation in CdS/CdTe Nanopencils," Chem. Sci. 5, 3831 (2014).

M. Okano, Y. Takabayashi, T. Sakurai, K. Akimoto, H. Shibata, S. Niki, and Y. Kanemitsu, "Slow intraband relaxation and localization of photogenerated carriers in CuIn1-xGaxSe2 thin films: Evidence for the existence of long-lived high-energy carriers," Phys. Rev. B 89, 195203 (2014).

M. Okano, T. Nishihara, Y. Yamada, and Y. Kanemitsu, "Chemical doping-induced changes in optical properties of single-walled carbon nanotubes," Jpn. J. Appl. Phys. 53, 05FD02 (2014).

L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Temperature-dependent photocarrier recombination dynamics in Cu2ZnSnS4 single crystals," Appl. Phys. Lett. 104, 081907 (2014).

T. Nishihara, Y. Yamada, M. Okano, and Y. Kanemitsu, "Quantized exciton-exciton recombination in undoped and hole-doped single-walled carbon nanotubes," Jpn. J. Appl. Phys. 53, 02BD10 (2014).

L. Q. Phuong, M. Okano, Y. Yamada, A. Nagaoka, K. Yoshino, and Y. Kanemitsu, "Photocarrier localization and recombination dynamics in Cu2ZnSnS4 single crystals," Appl. Phys. Lett. 103, 191902 (2013).

T. Nishihara, Y. Yamada, M. Okano, and Y. Kanemitsu, "Trion Formation and Recombination Dynamics in Hole-Doped Single-Walled Carbon Nanotubes," Appl. Phys. Lett. 103, 023101 (2013).

Y. Kimoto, M. Okano, and Y. Kanemitsu, "Observation of excited-state excitons and band-gap renormalization in hole-doped carbon nanotubes using photoluminescence excitation spectroscopy," Phys. Rev. B 87, 195416 (2013).

M. Okano, T. Nishihara, Y. Yamada, and Y. Kanemitsu, "Dynamics of excitons and trions in semiconducting carbon nanotube," Proc. of SPIE 8623, 86231F (2013).

S. Chen, M. Okano, B. Zhang, M. Yoshita, H. Akiyama, and Y. Kanemitsu, "Blue 6-ps short-pulse generation in gain-switched InGaN vertical-cavity surface-emitting lasers via impulsive optical pumping," Appl. Phys. Lett. 101, 191108 (2012).

M. Okano, Y. Kanemitsu, S. Chen, T. Mochizuki, M. Yoshita, H. Akiyama, L. N. Pfeiffer, and K. W. West, "Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy," Phys. Rev. B 86, 085312 (2012).

M. Yoshita, T. Okada, H. Akiyama, M. Okano, T. Ihara, L. N. Pfeiffer, and K. W. West, "Quantitative absorption spectra of quantum wires measured by analysis of attenuated internal emissions," Appl. Phys. Lett. 100, 112101 (2012).

M. Okano, P. Huai, M. Yoshita, S. Inada, H. Akiyama, K. Kamide, K. Asano, and T. Ogawa, "Robust Carrier-Induced Suppression of Peak Gain Inherent to Quantum-Wire Lasers," J. Phys. Soc. Jpn. 80, 114716 (2011).

M. Okano, R. Matsunaga, K. Matsuda, S. Masubuchi, T. Machida, and Y. Kanemitsu, "Raman study on the interlayer interactions and the band structure of bilayer graphene synthesized by alcohol chemical vapor deposition," Appl. Phys. Lett. 99, 151916 (2011).

M. Okano, M. Yoshita, H. Akiyama, P. Huai, T. Ogawa, L. N. Pfeiffer, and K. W. West, "Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers" , Phys. Status Solidi C 8, 20 (2011).

T. Fukushima, 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," Physica E 42, 2529 (2010).

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," Phys. Status Solidi C 5, 2841 (2008).

S. Inada, M. Yoshita, M. Okano, T. Ihara, H. Akiyama, and Liming Zhang, "Measurements of Cavity-Length-Dependent Internal Differential Quantum Efficiency and Internal Optical Loss in Laser Diodes," Jpn. J. Appl. Phys. 47, 2288 (2008).

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 100K," Physica E 40, 1947 (2008).

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," Physica E 40, 1726 (2008).

S.-M. Liu, M. Yoshita, M. Okano, T. Ihara, H. Itoh, H. Akiyama, L. Pfeiffer, K. West, and K. Boldwin, "Electronic Structure and Efficient Carrier Injection in Low-Threshold T-shaped Quantum-Wire Lasers with Parallel p- and n-Doping Layers," J. Appl. Phys. 102, 043108 (2007).

M. Yoshita, S.-M. Liu, M. Okano, Y. Hayamizu, H. Akiyama, L. N. Pfeiffer, and K. W. West, "T-shaped GaAs quantum-wire lasers and the exciton Mott transition," J. Phys.; Condensed Matters 19, 295217 (2007).

S.-M. Liu, M. Yoshita, M. Okano, T. Ihara, H. Itoh, H. Akiyama, L. Pfeiffer, K. West, and K. Boldwin, "Low-threshold Current-injection Single-mode Lasing in T-shaped GaAs/AlGaAs Quantum Wires," Jpn. J. Appl. Phys. 46, L330 (2007).

M. Okano, S.-M. Liu, M. Yoshita, T. Ihara, H. Itoh, H. Akiyama, L. N. Pfeiffer, K. West, and O. Malis,"Temperature-dependent current injection and lasing in T-shaped quantum wire laser diodes with perpendicular p- and n-doping layers," Appl. Phys. Lett. 90, 091108 (2007).

岡野 真人、水田 圭祐、渡邉 紳一、森本 崇宏、阿多 誠介、"テラヘルツ誘電分光法によるカーボンブラック充填ゴムの変形にともなう不可逆誘電率変化の検査" 検査技術、第27号、10月号、pp.15–20 (2022)

渡邉 紳一、岡野 真人、"テラヘルツセンシングで見えるもの–高分子材料評価への応用–" 一般財団法人電波技術協会協会報FORN、11月号、pp.46–49 (2020)

岡野 真人、渡邉 紳一、"テラヘルツ偏光計測による高分子材料の内部異方性検査" プラスチックス、10月号、pp.22–25 (2019)

渡邉 紳一、岡野 真人、"テラヘルツ偏光分光法を用いた黒色ゴム材料の非破壊検査技術と応用展開" 応用物理、第88巻、第2号、pp.91–95 (2019)

渡邉 紳一、岡野 真人、中迫　雅由、"高分子材料における異方性のテラヘルツセンシング" レーザー研究、第47巻、第1号、pp.21–26 (2019)

岡野 真人、渡邉 紳一、"テラヘルツ偏光計測による黒色ゴム材料内部のフィラー構造検査" 光アライアンス、第29巻、7月号、pp.33–36 (2018)

森脇 淳仁、岡野 真人、渡邉 紳一、"テラへルツ偏光計測による黒色ゴムの内部歪み検査" 検査技術、第23号、6月号、pp.9–14 (2018)

渡邉 紳一、岡野 真人、"テラヘルツ光を用いた複屈折計測による高分子材料のひずみ検査" 月刊オプトロニクス、Vol.36、No.431、pp.120–124 (2017)

岡野 真人、渡邉 紳一、"実用黒色ゴム材料における巨大光学異方性" フォトニクスニュース、第3巻、第3号、pp.91–95 (2017)