- Researcher Fluorescent Materials Department, Research Center, Sony Corporation, Yokohama, Japan, 1989—1990, Semiconductor Laser Department, Research Center, Sony Corporation, Yokohama, Japan, 1990—1993, assistant manager Japan, 1993—1996, Semiconductor Laser Division, Sony Corporation, Atsugi, Japan, 1996—2000, Sony Computer Entertainment Inc., Tokyo, 2000—2001. Manager Semiconductor Laser Division, Sony Corporation, Atsugi, Japan, 2001—2002, senior manager Japan, since 2002.
Achievements include development of hybrid-integrated optical device, two-wavelength-beam laser coupler, including two-wavelength laser emission/detection functions and used for the optical pickup head of the Digital Video Disc/Civil Defense system. Development of monolithic-integrated two-wavelength laser diode for Digital Video Disc/Civil Defense system. Development of hybrid-integrated optical device for mini-disc recorder.
Research in hybrid-integrated two-dimensional high-efficiency high-power laser diode array. Research in surface-emitting laser diode using grown-in 45 degree mirror.
1989 - 1990
1990 - 1993
2001 - 2002
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