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Surface-emitting laser device and surface-emitting laser array including same

  • US 8,699,540 B2
  • Filed: 10/26/2012
  • Issued: 04/15/2014
  • Est. Priority Date: 02/03/2006
  • Status: Active Grant
First Claim
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1. A surface-emitting laser device, comprising:

  • a substrate connected to a heat sink;

    a first reflective layer formed of a semiconductor distributed Bragg reflector on the substrate;

    a first cavity spacer layer formed in contact with the first reflective layer;

    an active layer formed in contact with the first cavity spacer layer;

    a second cavity spacer layer formed in contact with the active layer; and

    a second reflective layer formed of a semiconductor distributed Bragg reflector in contact with the second cavity spacer layer,wherein the first cavity spacer layer includes a semiconductor material having a thermal conductivity greater than a thermal conductivity of a semiconductor material forming the second cavity spacer layer, andwherein a thermal conductivity of a semiconductor material of a low refractive index layer in the first reflective layer closest to the active layer is greater than a thermal conductivity of a semiconductor material of a low refractive index layer in the second reflective layer closest to the active layer.

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