Dr. Ryoichi Akimoto Profile

Dr. Ryoichi Akimoto

Senior Researcher at AIST

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Author

Publications (6)

Proceedings Article | 31 October 2016 Paper

Silicon nitride grating waveguide based directional coupler

Jijun Feng, Anyuan Li, Ryoichi Akimoto, Heping Zeng

Proceedings Volume 10019, 1001905 (2016) https://doi.org/10.1117/12.2246282

KEYWORDS: Silicon, Waveguides, Directional couplers, Integrated photonics, Wave propagation, CMOS technology, Beam splitters, Electron beam lithography, Reactive ion etching, Diffraction gratings

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Proceedings Article | 9 March 2016 Paper

Room-temperature continuous-wave operation of BeZnCdSe quantum-well green-to-yellow laser diodes with sub-10 mA threshold current

Jijun Feng, Ryoichi Akimoto

Proceedings Volume 9767, 97670C (2016) https://doi.org/10.1117/12.2211916

KEYWORDS: Semiconductor lasers, Laser damage threshold, Waveguides, Continuous wave operation, Laser development, Reactive ion etching, Superlattices, Quantum wells, Semiconducting wafers, Cadmium, Quantum efficiency, Statistical analysis, Absorption

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Proceedings Article | 10 March 2015 Paper

A ZnSe/BeTe p-grading superlattice with a low voltage drop for efficient hole injection in green-yellow BeZnCdSe quantum well laser

R. Akimoto

Proceedings Volume 9382, 93821T (2015) https://doi.org/10.1117/12.2078174

KEYWORDS: Quantum wells, Superlattices, Semiconductor lasers, Diodes, Indium gallium nitride, Plasma, Gallium arsenide, Etching, Reliability, Continuous wave operation

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Proceedings Article | 11 September 2013 Paper

Thermal annealing effects on the properties of intersubband absorption in CdS/ZnSe and (CdS/ZnSe)/BeTe II-VI quantum wells

Bing-Sheng Li, Ryoichi Akimoto, Aidong Shen

Proceedings Volume 8907, 89073Y (2013) https://doi.org/10.1117/12.2034320

KEYWORDS: Quantum wells, Annealing, Absorption, Thermal effects, Electrons, Diffusion, Cadmium, Infrared imaging, Waveguides, Cadmium sulfide

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Proceedings Article | 4 March 2013 Paper

Continuous-wave operation of green/yellow laser diodes based on BeZnCdSe quantum wells

R. Akimoto, T. Hasama, H. Ishikawa, J. Kasai, S. Fujisaki, S. Tanaka, S. Tsuji

Proceedings Volume 8640, 86400F (2013) https://doi.org/10.1117/12.2007351

KEYWORDS: Quantum wells, Semiconductor lasers, Continuous wave operation, Waveguides, Indium gallium nitride, Cadmium, Superlattices, Gallium arsenide, Crystals

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Proceedings Article | 18 November 2008 Paper

Ultrafast all-optical switching using intersubband transitions in InGaAs/AlAs/AlAsSb quantum wells

H. Ishikawa, R. Akimoto, G. W. Cong, M. Nagase, T. Mozume, C. Lim, S. Gozu, T. Hasama

Proceedings Volume 7135, 71350X (2008) https://doi.org/10.1117/12.803444

KEYWORDS: Phase shifts, Quantum wells, Absorption, Phase modulation, Ultrafast phenomena, Modulation, Switches, Signal attenuation, Refractive index, Control systems

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Showing 5 of 6 publications

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