Ms. Yumi Yamada Profile

Yumi Yamada

GM Advanced Research Core at Fujikura Ltd.

SPIE Involvement:

Author

Proceedings Article | 28 May 2024 Presentation + Paper

High accuracy object detection by an optical neural network implementation

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

Proceedings Volume 13083, 1308303 (2024) https://doi.org/10.1117/12.3020003

KEYWORDS: Object detection, Target detection, Neural networks, Spatial light modulators, Education and training, Phase modulation, Simulations

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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 10 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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