(36)"Photoluminescence Intensity Dependence of InGaAs MQW on Relaxation Layer Composition on GaAs Substrate ",Kazuki Usui, Koki Hombu, Hidetoshi Suzuki, Masakazu Arai ,MOC2023, PO-12 (2023.9)

(35)"Corroded Area Detection and Onset Day Estimation of Mango Using Hyperspectral Imaging ",Hikari Yoshioka , Koudai Shimotabira, and Masakazu Arai ,MOC2023, PO-17 (2023.9)

(34)"MOVPE Growth and Characterization of InAsSb/InAsP Quantum Wells on GaAs Substrate using a Two-Step InAs Buffer Layer",Koki Hombu, Shota Nakagawa, Yuto Iwakiri, Koji Maeda, and Masakazu Arai,CSW2023, FrC1-3 (2023.5)

(33)"InGaAsP Photovoltaic Device with Circular Outer Electrode for 1.06-µm-Range Optical Wireless and Fiber Power Transmission",Masakazu Arai, Akira Kushiyama, Yuga Motomura, Yukiko Suzuki, Natsuha Ochiai, Youhei Toriumi, and Kensuke Nishioka,CSW2023, FrA1-5 (2023.5)

(32)"Evaluation of Window Layer Thickness Dependence of InGaAsP Photovoltaic Device for 1.06-µm-range Laser Power Transmission",Yuga Motomura, Akira Kushiyama, Kensuke Nishioka, and Masakazu Arai,OWPT2023,(2023.4)

(31)"Photovoltaic characteristics of GaP based device using a blue laser for optical wireless power transmission",Masakazu Arai, Akira Kushiyama and Koji Maeda,PVSEC,TuP-22-15,(2022.11)

(30)"Electrode design optimization of InGaAsP photovoltaic device for optical wireless power transmission",Akira Kushiyama,Yuga Motomura,Kensuke Nishioka and Masakazu Arai,PVSEC,TuP-22-17,Nagoya,(2022.11)

(29)"Wide Wavelength Range Emission from InAs/GaSb Type-II Superlattice Grown by MOVPE",Masakazu Arai, Yuto Iwakiri, Takeshi Fujisawa, and Koji Maeda,ISLC2022,TuP-28,Matsue,(2022.10)

(28)"Post-Growth Annealing and InGaSb Layer Insertion Effects on Metamorphic InAsSb on GaAs Substrate",Koki Hombu, Shota Nakagawa, Yuto Iwakiri, Koji Maeda and Masakazu Arai,CLEO-Pacific Rim2022,CMP11A-05,Hokkaido,(2022.8)

(27)"Electrode Thickness Dependence of GaAs based Photovoltaic Device Characteristics for Optical Wireless Power Transmission",Akira Kushiyama, Yuga Motomura, Kensuke Nishioka and Masakazu Arai,CLEO-Pacific Rim2022,CMP11A-04,Hokkaido,(2022.8)

(26)"Temperature Dependence of Mid-infrared Emission Process of InAs/GaSb Superlattices Grown by MOVPE",Masakazu ARAI, Koji MAEDA, Yuto IWAKIRI and Takeshi FUJISAWA,CLEO-Pacific Rim2022,CMP11A-03,Hokkaido,(2022.8)

(25)"Effects of Window Layer on InGaAsP Photovoltaic Device for 1.06-µm-range Laser Power Transmission",Yuga motomura, Akira kushiyama, Kensuke nishioka and Masakazu arai,OWPT2022,OWPT9-03,online,(2022.4)

(24)"Zn Doping Effect on Surface Morphology of Metamorphic InAs on GaAs Grown by MOVPE ",Shota Nakagawa,Yuki Imamura,Yasushi Hirata, Koji Maeda and Masakazu Arai,MOC2021,PO-52 ,online,(2021.9)

(23)"Optical Reflection and Fluorescence Study for Non-destructive Estimation of Crude Protein Content in Leaves of Grass",Mitsuki Sakakura, Naoya Kita, Genki Ishigaki and Masakazu Arai,MOC2021,PO-51 ,online,(2021.9)

(22)"Experimental Investigation of Electrode Design for Photovoltaic device for Laser Receiving Photovoltaic Device",Akira Kushiyama and Masakazu Arai,OWPT2021,P-11,online,(2021.4)

(21)"Fabrication and Characterization of GaP Based Photovoltaic Devices for Short Wavelength Range Optical Wireless Power Transmission",Masakazu Arai, Akira Kushiyama and Koji Maeda,OWPT2021,3-03, online,(2021.4)

(20) "Crystal Growth and Evaluation of GaP Based Photovoltaic Devices for Blue Laser Light Receiver",Masakazu Arai, Kensuke Hiwada, Shinnosuke Tsuboyama, Keisuke Oishi and Koji Maeda,OWPT2020, ,Yokohama,(2020.4)

(19) "Study on Application of Vegetation Index to Estimate Crude Protein Content of Rhodesgrass",Keishiro Nakamura, Zhongyuan Zhuang, Genki Ishigaki and Masakazu Arai,NIR2019,7907,Gold Coast,(2019.9)

(18) "MOVPE growth and evaluation of mid-infrared range superlattice",Masakazu Arai,Yuki Imamura,Takeshi Fujisawa,Koji Maeda,APSMR2019,20,Hokkaido,(2019.7)

(17) "Growth and PL Measurement of Metamorphic InAs and InAs/GaSb Superlattice using MOVPE for Mid-Infrared Photonic Devices",Yuki Imamura,Miki Shoiriki,Tomohito Ohama,Koji Maeda,Masakazu Arai,OECC2019,TuP4-D7,Fukuoka,(2019.7)

(16) "Optimization of gas flow sequence for mid-infrared range Sb-based superlattice using MOCVD",Masakazu Arai,Yuki Imamura,Koji Maeda,EMNEpitaxy2019,A43,Amsterdam(2019.6)

(15) "Growth Temperature and Sb Flow Dependence of Surface Morphology of Metamorphic InAs(Sb)on GaAs substrate Grown by MOVPE",Yuki Imamura,Miki Shoiriki,Koji Maeda,Masakazu Arai,CSW2019,TuP-A-8,Nara,(2019.5)

(14) "MOVPE Growth of InAIGaP Based Materials for Short Wavelength Range Optical Wireless Power Receiving Devices",Masakazu Arai,Shinnosuke Tsuboyama,Kensuke Hiwada,Daichi Horita,Ryosuke Wakaki,Koji Maeda,OPIC2019,OWPT-3-03,Yokohama,(2019.4)

(13)" Layer Thickness Dependence of Lattice Mismatch and Emission Wavelength on MOVPE Grown InAs/GaSb Superlattice for Mid-infrared Photonic Devices", Masakazu Arai, Yuya Yamagata, Ryosuke Wakaki, Koji Maeda, 23rd Micro Optics Conference (MOC2018), G-3, Taipei, (2018.10).

(12) "InAlGaP Growth on GaAs (311)B for Short Wavelength Range Optical Wireless Power Conversion Devices", Kensuke Hiwada, Shinnosuke Tsuboyama, Ryosuke Wakaki, Koji Maeda, and Masakazu Arai, 23rd Micro Optics Conference (MOC2018), G-4, Taipei, (2018.10).

(11) "Reflection Spectrum Analysis for Estimation of Protein Content in Grasses and Application to Remote Sensing", Keishiro Nakamura, Shotaro Miyaji, Genki Ishigaki, and Masakazu Arai, 23rd Micro Optics Conference (MOC2018), P-24, Taipei, (2018.10).

(10) "Optical Wireless Power Transmission Experiments using 2-D LED Array and Photovoltaics", Shinnosuke Tsuboyama, Kensuke Hiwada and Masakazu Arai, 23rd Micro Optics Conference (MOC2018), P-28, Taipei, (2018.10).

(9)"Microscopic Gain analysis of Modulation-Doped GeSn Quantum Well: Epitaxial Design toward High-Temperature Lasing", Takeshi Fujisawa, Masakazu Arai, and Kunimasa Saitoh, 15th IEEE Group IV Photonics, Wa3, Mexico, (2018.8).

(8) "Metalorganic Precursors Dependence of Impurity Concentration in AlGaAsSb and Optical Characteristics of InAs / GaAsSb Superlattice", Kakeru Takahashi, Yuya Yamagata, Yuki Fujiwara, Yuki Inoue, Ryosuke Wakaki, Koji Maeda, and Masakazu Arai, 19th Internatinal Conference on Metalorganic Vapor Phase Epitaxy (ICMOVPE-XIX),P1-32, Nara, (2018.6).

(7) "Sn Concentration and Surface Morphology of GeSn Layer on GaAs (311)B Substrate Grown by MOVPE", Yuki Fujiwara, Kakeru Takahashi, Takaeshi Fujisawa, Koji Maeda, and Masakazu Arai, 19th Internatinal Conference on Metalorganic Vapor Phase Epitaxy (ICMOVPE-XIX),P1-39, Nara, (2018.6).

(6) "MOVPE Growth of AlGaInP Distributed Bragg Reflector on GaAs (311)B for Resonant Cavity Photovoltaic Receiver for Laser Light", Masakazu Arai, Shinnosuke Tsuboyama, Kensuke Hiwada, Masaya Kamikado, Ryosuke Wakaki, and Koji Maeda, 19th Internatinal Conference on Metalorganic Vapor Phase Epitaxy (ICMOVPE-XIX),P2-30, Nara, (2018.6).

(5) "Emission Spectrum Evaluation of 0.8 - 1.1 μm Range Chirped Multiple Quantum Wells for Optical Sensing ",Masaya Kamikado , Yuga Imamura and Masakazu Arai, 22nd Microoptics Conference(MOC2017), P-85, Tokyo, (2017.11).

(4) "MOVPE Growth of Lattice Matched InAs/GaAsSb Superlattice on InAs Substrate for Mid-Infrared Sensing Devices ",Kakeru Takahashi, Yuki Fujiwara, Yuya Yamagata,Keita Yoshimoto, Yuki Inoue, Ryosuke Wakaki, Koji Maeda, Masakazu Arai, 22nd Microoptics Conference(MOC2017), P-83, Tokyo, (2017.11).

(3)" Wavelength Range Extension by Chirped and Nitrogen Incorporated InGaAs(N) Quantum Wells for Super Luminescent Diode", Yuga Imamura, Keita Yoshimoto, Masakazu Arai, 2017 CLEO Pacific Rim Conference, P3-113, Singapore, (2017.7).

(2) "Design and Growth of Metamorphic Sb-based materials on GaAs substrate for Mid-Infrared Photonic Devices", Keita Yoshimoto, Yuya Yamagata,Yuga Imamura and Masakazu Arai, 2017 CLEO Pacific Rim Conference, P3-112, Singapore, (2017.7).

(1)" A Compact And Low-loss GeSn Electroabsorption Modulator Using Vertical Multimode Interference For Mid-infrared Ge-on-Si Platform", Minami Akie, Takanori Sato, Masakazu Arai, Takeshi Fujisawa, Kunimasa Saitoh, 2017 CLEO Pacific Rim Conference, P3-107, Singapore, (2017.7).