Ms. Yumi Yamada Profile

Yumi Yamada

GM Advanced Research Core at Fujikura Ltd.

SPIE Involvement:

Author

Proceedings Article | 22 May 2023 Presentation + Paper

High accuracy inference by an optical neural network implementation

Shun Miura, Mamoru Otake, Hiroyuki Kusaka, Masahiro Kashiwagi, Yuichiro Kunai, Takahiro Nambara, Yumi Yamada

Proceedings Volume 12327, 123270E (2023) https://doi.org/10.1117/12.2643679

KEYWORDS: Simulations, Neural networks, Mirrors, Spatial light modulators, Reflection, Image processing, Phase modulation, Neurons, Wavefronts

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Proceedings Article | 4 March 2019 Presentation + Paper

Enhanced power conversion efficiency in 900-nm range single emitter broad stripe laser diodes maintaining high power operability

Yoshikazu Kaifuchi, Kyohei Yoshida, Yuji Yamagata, Ryozaburo Nogawa, Yumi Yamada, Masayuki Yamaguchi

Proceedings Volume 10900, 109000F (2019) https://doi.org/10.1117/12.2509184

KEYWORDS: Semiconductor lasers, High power lasers, Active optics, Fiber lasers, Laser systems engineering

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Proceedings Article | 19 February 2018 Paper

High polarization purity operation of 99% in 9xx-nm broad stripe laser diodes

Rintaro Morohashi, Yuji Yamagata, Yoshikazu Kaifuchi, Katsuhisa Tada, Ryozaburo Nogawa, Yumi Yamada, Masayuki Yamaguchi

Proceedings Volume 10514, 105140B (2018) https://doi.org/10.1117/12.2288157

KEYWORDS: Polarization, Semiconductor lasers, High power lasers, Near field, Waveguides, Metalorganic chemical vapor deposition

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Proceedings Article | 22 February 2017 Presentation + Paper

Ultimate high power operation of 9xx-nm single emitter broad stripe laser diodes

Yoshikazu Kaifuchi, Yuji Yamagata, Ryozaburo Nogawa, Rintaro Morohashi, Yumi Yamada, Masayuki Yamaguchi

Proceedings Volume 10086, 100860D (2017) https://doi.org/10.1117/12.2251145

KEYWORDS: High power lasers, Semiconductor lasers, Fiber lasers, Resistance, Laser development, Waveguides, Indium gallium arsenide, Light sources, Reliability

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Proceedings Article | 13 March 2015 Paper

915nm high-power broad area laser diodes with ultra-small optical confinement based on Asymmetric Decoupled Confinement Heterostructure (ADCH)

Yuji Yamagata, Yumi Yamada, Masanori Muto, Syunta Sato, Ryozaburo Nogawa, Akira Sakamoto, Masayuki Yamaguchi

Proceedings Volume 9348, 93480F (2015) https://doi.org/10.1117/12.2078698

KEYWORDS: High power lasers, Reliability, Semiconductor lasers, Active optics, Heterojunctions, Fiber lasers, Laser systems engineering, Absorption, Broad area laser diodes, Absorbance

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Proceedings Article | 1 April 2005 Paper

High-power and highly reliable 980-nm lasers with window structure using impurity-free vacancy disordering

Yumi Yamada, Yoshikazu Yamada, Tsuyoshi Fujimoto, Kazuomi Uchida

Proceedings Volume 5738, (2005) https://doi.org/10.1117/12.589962

KEYWORDS: Fiber lasers, Optical amplifiers, Continuous wave operation, High power lasers, Heterojunctions, Semiconductor lasers, Fiber amplifiers, Reliability, Absorption, Laser optics

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Proceedings Article | 14 April 1999 Paper

Characteristics and reliability of high-power InGaAs/AlGaAs laser diodes with decoupled confinement heterostructure

Yoshikazu Yamada, Atsushi Okubo, Yasuo Oeda, Yumi Yamada, Tsuyoshi Fujimoto, Kiyofumi Muro

Proceedings Volume 3626, (1999) https://doi.org/10.1117/12.345434

KEYWORDS: Semiconductor lasers, Waveguides, Reliability, Heterojunctions, High power lasers, Diodes, Laser optics, Laser development, Pulsed laser operation

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Proceedings Article | 1 April 1999 Paper

High-power InGaAs/AlGaAs laser diodes with decoupled confinement heterostructure

Tsuyoshi Fujimoto, Yumi Yamada, Yoshikazu Yamada, Atsushi Okubo, Yasuo Oeda, Kiyofumi Muro

Proceedings Volume 3628, (1999) https://doi.org/10.1117/12.344544

KEYWORDS: Semiconductor lasers, Waveguides, Resistance, High power lasers, Gallium arsenide, Continuous wave operation, Heterojunctions, Laser development, Cladding, Doping

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Proceedings Article | 4 May 1998 Paper

Characteristics and reliability of high-power GaAs/AlGaAs laser diodes with a decoupled confinement heterostructure

Tsuyoshi Fujimoto, Yoshikazu Yamada, Yasuo Oeda, Atsushi Okubo, Yumi Yamada, Kiyofumi Muro

Proceedings Volume 3285, (1998) https://doi.org/10.1117/12.307594

KEYWORDS: Semiconductor lasers, Heterojunctions, High power lasers, Quantum wells, Waveguides, Aluminum, Continuous wave operation, Gallium arsenide, Diodes, Reliability

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Showing 5 of 9 publications

Conference Committee Involvement (2)

High-Power Diode Laser Technology XX

23 January 2022 | San Francisco, California, United States

High-Power Diode Laser Technology XIX

6 March 2021 | Online Only, California, United States

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