Y
Yasuharu Suematsu
Researcher at Tokyo Institute of Technology
Publications - 255
Citations - 8820
Yasuharu Suematsu is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Laser & Semiconductor laser theory. The author has an hindex of 42, co-authored 254 publications receiving 8695 citations. Previous affiliations of Yasuharu Suematsu include Sumitomo Electric Industries & Kōchi University.
Papers
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Measurement of spontaneous-emission factor of AlGaAs double-heterostructure semiconductor lasers
TL;DR: In this article, experimental determination of the spontaneous emission factor of an injection laser is presented, which is in good agreement with the theoretical prediction based upon the classical wave theory, which shows that the damping oscillation can be decreased in a laser consisting of very small active region.
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Resonance-like characteristics of the direct modulation of a junction laser
T. Ikegami,Yasuharu Suematsu +1 more
TL;DR: In this article, a resonance-like phenomenon was found from the analysis of the characteristics of the direct modulation of a junction laser with a bias current based on the rate equations, and the resonance was further investigated.
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Long-wavelength optical fiber communication
TL;DR: In this article, a review of long-wavelength lightwave communication utilizing the wavelength region between 1.3 and 1.6 µm is presented with an eye toward future system development.
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GaInAsP/InP integrated laser with butt-jointed built-in distributed-Bragg-reflection waveguide
TL;DR: In this paper, a GaInAsP/InP integrated laser with butt-jointed built-in distributed-Bragg-reflection waveguide (BJB-DBR integrated laser for short) is proposed and demonstrated.
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Lasing action of Ga0.67In0.33As/GaInAsP/InP tensile-strained quantum-box laser
TL;DR: In this article, a Ga/sub 0.67/In/Sub 0.33/As/GaInAsP/InP quantum-box (QB) laser with single-layer tensile-strained active region is demonstrated for the first time.