Panasonic Holdings Corporation

Masaharu Fukakusa

Hideo Yamaguchi

A semiconductor laser device is controlled by a controller and includes a plurality of optical amplifiers that each emit a light beam, a diffraction grating that receives the light beam from each of the plurality of optical amplifiers, and a rotary mirror that is rotatable and is disposed in an optical path between the plurality of optical amplifiers and the diffraction grating. The controller rotates the rotary mirror in accordance with a current applied to the plurality of optical amplifiers, and an angle of incidence of the light beam on the diffraction grating changes in accordance with the current applied.

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Osaka, Japan

Masaharu Fukakusa