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SEMICONDUCTOR LASER DEVICE

  • US 20170338624A1
  • Filed: 12/24/2015
  • Published: 11/23/2017
  • Est. Priority Date: 12/24/2014
  • Status: Active Grant
First Claim
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1. A semiconductor laser device that comprises a semiconductor laser chip and a spatial light modulator optically coupled to the semiconductor laser chip, and modulates a laser beam output along a thickness direction of the semiconductor laser chip by the spatial light modulator and outputs the laser beam to the outside, whereinthe semiconductor laser chip includes:

  • an active layer;

    a pair of cladding layers sandwiching the active layer;

    a diffractive grating layer optically coupled to the active layer; and

    a drive electrode that is disposed between the cladding layer on the spatial light modulator side and the spatial light modulator, and supplies an electric current to the active layer, andin a case where an XYZ three-dimensional orthogonal coordinate system is set,a thickness direction of the semiconductor laser chip is set as a Z-axis direction, anda plane parallel to an interface between the semiconductor laser chip and the spatial light modulator is set as an XY plane,the drive electrode is positioned within the XY plane,the drive electrode has a plurality of openings as viewed from the Z-axis direction, andthe drive electrode has a non-periodic structure.

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