Mr. Motoharu Miyashita Profile

Motoharu Miyashita

Manager at Mitsubishi Electric Corp

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Author

Publications (12)

SPIE Journal Paper | 5 October 2020

Slow degradation of a multiemitter 638-nm high-power broad-area laser diode during long-term aging

Kyosuke Kuramoto, Shinji Abe, Motoharu Miyashita, Takehiro Nishida, Tetsuya Yagi

OE, Vol. 59, Issue 10, 106101, (October 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.10.106101

KEYWORDS: Semiconductor lasers, High power lasers, Optical engineering, Laser based displays, Continuous wave operation, Projection systems, Absorption, Temperature metrology, Telecommunications, Resistance

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Proceedings Article | 19 February 2018 Presentation + Paper

Recent progress of 638-nm high-power broad area laser diodes in Mitsubishi Electric

Kyosuke Kuramoto, Shinji Abe, Motoharu Miyashita, Takehiro Nishida, Tetsuya Yagi

Proceedings Volume 10514, 1051404 (2018) https://doi.org/10.1117/12.2287628

KEYWORDS: Technetium, LCDs, Spatial light modulators, Projection systems, Continuous wave operation, High power lasers, Laser based displays, Reliability, Polonium, Broad area laser diodes

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Proceedings Article | 4 March 2016 Paper

Reliability study on high power 638-nm triple emitter broad area laser diode

T. Yagi, K. Kuramoto, K. Kadoiwa, R. Wakamatsu, M. Miyashita

Proceedings Volume 9733, 973305 (2016) https://doi.org/10.1117/12.2211851

KEYWORDS: Reliability, Semiconductor lasers, High power lasers, Pulsed laser operation, Mirrors, Projection systems, Light sources, Broad area laser diodes, Mirror structures, Spatial light modulators, Laser based displays, LCDs, Aluminium gallium indium phosphide

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Proceedings Article | 13 March 2015 Paper

High-power operation of AlGaInP red laser diode for display applications

K. Kuramoto, T. Nishida, S. Abe, M. Miyashita, K. Mori, T. Yagi

Proceedings Volume 9348, 93480H (2015) https://doi.org/10.1117/12.2077354

KEYWORDS: Semiconductor lasers, Resistance, Aluminium gallium indium phosphide, Laser based displays, Reliability, Projection systems, Cladding, High power lasers, Active optics

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Proceedings Article | 4 March 2013 Paper

Highly-reliable operation of 638-nm broad stripe laser diode with high wall-plug efficiency for display applications

Tetsuya Yagi, Naoyuki Shimada, Takehiro Nishida, Hiroshi Mitsuyama, Motoharu Miyashita

Proceedings Volume 8640, 86400E (2013) https://doi.org/10.1117/12.2003447

KEYWORDS: Semiconductor lasers, Projection systems, Light sources, Cladding, Aluminium gallium indium phosphide, Laser based displays, Efficient operations, Gallium arsenide, Absorbance

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Proceedings Article | 9 February 2012 Paper

Improvement of wall plug efficiency in near-infrared lateral single-mode LDs at high temperature

Tetsuya Yagi, Takuto Maruyama, Masatsugu Kusunoki, Naoyuki Shimada, Motoharu Miyashita

Proceedings Volume 8241, 82410Y (2012) https://doi.org/10.1117/12.906503

KEYWORDS: Aluminium gallium indium phosphide, Cladding, Near infrared, Gallium arsenide, Sensors, Doping, Infrared radiation, Aluminum, Semiconductor lasers

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Proceedings Article | 21 February 2011 Paper

Short wavelength limitation in high power AlGaInP laser diodes

Takehiro Nishida, Naoyuki Shimada, Tetsuya Ogawa, Motoharu Miyashita, Tetsuya Yagi

Proceedings Volume 7918, 791811 (2011) https://doi.org/10.1117/12.872939

KEYWORDS: Aluminium gallium indium phosphide, Luminous efficiency, Semiconductor lasers, Cladding, Luminous efficacy, Laser based displays, High power lasers, Projection systems, Technetium

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Proceedings Article | 11 May 2004 Paper

High-power red laser diode for recordable DVDs

Motoharu Miyashita, Takeshi Nakayama, Tadashi Takase, Yuji Ohkura, Yasuaki Yoshida, Harumi Nishiguchi, Akihiro Shima, Takashi Nishimura

Proceedings Volume 5365, (2004) https://doi.org/10.1117/12.530179

KEYWORDS: Digital video discs, Pulsed laser operation, Semiconductor lasers, Waveguides, High power lasers, Refractive index, Cladding, Resistance, Solid state physics

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Proceedings Article | 6 June 2001 Paper

High-efficiency and high-power laser diodes for CD-R/RW and DVD-RAM/RW

Akihiro Shima, Motoharu Miyashita, Zempei Kawazu, Harumi Nishiguchi, Motoko Sasaki, Yoshihisa Tashiro, Tetsuya Yagi, Etsuji Omura, Yoshihiro Kokubo

Proceedings Volume 4287, (2001) https://doi.org/10.1117/12.429805

KEYWORDS: Pulsed laser operation, Mirrors, High power lasers, Waveguides, Continuous wave operation, Mirror structures, Diodes, Semiconductor lasers, Quantum wells

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Proceedings Article | 18 April 2000 Paper

100-mW cw operation of 650- to 685-nm red lasers with window-mirror-structure

Motoharu Miyashita, Akihiro Shima, Motoko Katoh, Yoshifumi Sakamoto, Ken-ichi Ono, Tetsuya Yagi, Yoshihiro Kokubo

Proceedings Volume 3947, (2000) https://doi.org/10.1117/12.382084

KEYWORDS: Continuous wave operation, Semiconductor lasers, Quantum wells, Beam shaping, Reliability, Cladding, Gallium arsenide, Coating, Laser applications

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Proceedings Article | 28 April 1995 Paper

High-coupled-power 0.98-um narrow-beam laser diodes

Etsuji Omura, Akihiro Shima, Akira Takemoto, Yasuhiro Kunitsugu, Motoharu Miyashita, S. Karakida, T. Kamizato, Akihiro Adachi, Yasuaki Yoshida, Mutuyuki Otsubo

Proceedings Volume 2382, (1995) https://doi.org/10.1117/12.208439

KEYWORDS: Cladding, Gallium arsenide, Aluminum, Semiconductor lasers, Metalorganic chemical vapor deposition, Single mode fibers, Waveguides, Diodes, Etching, Refractive index

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Proceedings Article | 26 June 1992 Paper

High-power TQW AlGaAs laser with new inner-stripe structure

Akihiro Shima, T. Miura, T. Shiba, Tomoko Kadowaki, N. Hayafuji, Motoharu Miyashita, S. Karakida, Nobuaki Kaneno, H. Kizuki, Etsuji Omura, Masao Aiga, Kenji Ikeda

Proceedings Volume 1634, (1992) https://doi.org/10.1117/12.59151

KEYWORDS: Semiconductor lasers, Etching, High power lasers, Semiconducting wafers, Laser applications, Metalorganic chemical vapor deposition, Cladding, Quantum wells, Technologies and applications, Active optics

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Showing 5 of 12 publications

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