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SURFACE-EMITTING LASER, SURFACE-EMITTING LASER ARRAY, LASER DEVICE, IGNITOR, INTERNAL COMBUSTION ENGINE, OPTICAL SCANNER, IMAGE FORMING APPARATUS, LIGHT TRANSMISSION MODULE, AND LIGHT EMISSION SYSTEM

  • US 20170168412A1
  • Filed: 11/30/2016
  • Published: 06/15/2017
  • Est. Priority Date: 12/11/2015
  • Status: Active Grant
First Claim
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1. A surface-emitting laser comprising:

  • an active layer;

    a spacer layer disposed on the active layer; and

    a reflection mirror disposed on the spacer layer, the reflection mirror including a current constriction layer that is a selectively-oxidized layer,the current constriction layer disposed at a position of a node of a standing-wave of an electric field of light oscillated at the active layer and disposed away from an interface between the spacer layer and the reflection mirror by an optical distance of one-fourth of an oscillation wavelength at the active layer,the selectively-oxidized layer made of AlGaAs,the reflection mirror including at least one AlGaInP layer in contact with the selectively-oxidized layer.

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