Patent ID: 8699540
Filing Date: 2014-04-15
Classification: B82Y,H01S

Abstract:
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, and wherein 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.