Dr. Yasumasa Kawakita Profile

Dr. Yasumasa Kawakita

Principal Researcher at Furukawa Electric Co., Ltd.

SPIE Involvement:

Conference Program Committee | Track Chair | Author

Websites:

Company Website

Proceedings Article | 12 March 2024 Presentation + Paper

High-power blue laser and copper welding with near-infrared fiber laser

Taisuke Atsumi, Kohei Kawasaki, Sumika Sano, Hiroatsu Aoki, Hajime Mori, Nobuyasu Matsumoto, Hiroto Kageyama, Ryoya Matsumoto, Toshiaki Sakai, Yasumasa Kawakita, Naoki Tsukiji

Proceedings Volume 12867, 128670A (2024) https://doi.org/10.1117/12.3002248

KEYWORDS: Blue lasers, Near infrared, Copper, Laser welding, Laser processing, Fiber lasers, High power lasers, Beam diameter, Light absorption, Thin film coatings

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Proceedings Article | 5 March 2021 Presentation + Paper

Simulation-assisted design of a compact tunable phase-modulated DBR/ring laser diode

Richárd Séfel, Péter Nyakas, Tamás Kárpáti, Gábor Varga, Yasumasa Kawakita

Proceedings Volume 11680, 1168013 (2021) https://doi.org/10.1117/12.2576665

KEYWORDS: Semiconductor lasers, Optical simulations, Microrings, Resonators, Wavelength tuning, Waveguides, Reflectivity, Phase shift keying, Modulation, Waveguide modes

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Proceedings Article | 7 February 2012 Paper

Reliability study of 1060nm 25Gbps VCSEL in terms of high speed modulation

Toshihito Suzuki, Suguru Imai, Shinichi Kamiya, Koji Hiraiwa, Masaki Funabashi, Yasumasa Kawakita, Hitoshi Shimizu, Takuya Ishikawa, Akihiko Kasukawa

Proceedings Volume 8276, 827604 (2012) https://doi.org/10.1117/12.907536

KEYWORDS: Vertical cavity surface emitting lasers, Reliability, Eye, Modulation, Polonium, Optical interconnects, Capacitance, Bismuth, Light sources, Oxidation

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Proceedings Article | 7 February 2012 Paper

1060nm VCSEL development at Furukawa for parallel optical interconnect

Masaki Funabashi, Suguru Imai, Keishi Takaki, Shinichi Kamiya, Hitoshi Shimizu, Yasumasa Kawakita, Koji Hiraiwa, Junji Yoshida, Toshihito Suzuki, Takuya Ishikawa, Naoki Tsukiji, Akihiko Kasukawa

Proceedings Volume 8276, 82760F (2012) https://doi.org/10.1117/12.912054

KEYWORDS: Vertical cavity surface emitting lasers, Reliability, Semiconducting wafers, Optical interconnects, Eye, Modulation, Oxides, Wave propagation, Resistance, Gallium arsenide

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Proceedings Article | 4 February 2011 Paper

1060nm VCSEL for inter-chip optical interconnection

Keishi Takaki, Suguru Imai, Shinichi Kamiya, Hitoshi Shimizu, Yasumasa Kawakita, Koji Hiraiwa, Tomohiro Takagi, Hiroshi Shimizu, Junji Yoshida, Takuya Ishikawa, Naoki Tsukiji, Akihiko Kasukawa

Proceedings Volume 7952, 795204 (2011) https://doi.org/10.1117/12.873662

KEYWORDS: Vertical cavity surface emitting lasers, Reliability, Optical interconnects, Eye, Computing systems, Light sources, Modulation, Semiconductors, Statistical analysis, Oxidation

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Proceedings Article | 6 February 2010 Paper

Experimental demonstration of low jitter performance and high reliable 1060nm VCSEL arrays for 10Gbpsx12ch optical interconnection

Keishi Takaki, Norihiro Iwai, Shinichi Kamiya, Hitoshi Shimizu, Koji Hiraiwa, Suguru Imai, Yasumasa Kawakita, Tomohiro Takagi, Takuya Ishikawa, Naoki Tsukiji, Akihiko Kasukawa

Proceedings Volume 7615, 761502 (2010) https://doi.org/10.1117/12.840130

KEYWORDS: Vertical cavity surface emitting lasers, Eye, Reliability, Optical interconnects, Polonium, Resistance, Optical arrays, Oxides, Indium gallium arsenide, Quantum wells

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Showing 5 of 6 publications

Conference Committee Involvement (2)

High-Power Diode Laser Technology XXIII

26 January 2025 | San Francisco, California, United States

High-Power Diode Laser Technology XXII

28 January 2024 | San Francisco, California, United States

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