Patent ID: 7693204
Filing Date: 2010-04-06
Classification: B82Y,H01S

Abstract:
1. A surface-emitting laser device, comprising: a first reflective layer formed of a semiconductor distributed Bragg reflector on a substrate; a second reflective layer formed in contact with the first reflective layer; a cavity including an active layer, the cavity being formed in contact with the second reflective layer; a third reflective layer formed in contact with the cavity; and a fourth reflective layer formed in contact with the third reflective layer, wherein the cavity is formed of an AlGaInPAs-system material; the second reflective layer includes a layered body of N first high refractive index layers and N first low refractive index layers that are alternately stacked, where N is a positive integer; the third reflective layer includes a layered body of M second high refractive index layers and M second low refractive index layers that are alternately stacked, where M is a positive integer; each of the N first low refractive index layers and the M second low refractive index layers is formed of (Al each of the N first high refractive index layers and the M second high refractive index layers is formed of (Al one of the N first low refractive index layers is in contact with the cavity, and one of the N first high refractive index layers is in contact with an AlGaAs-system material forming the first reflective layer; and one of the M second low refractive index layers is in contact with the cavity, and one of the M second high refractive index layers is in contact with an AlGaAs-system material forming the fourth reflective layer.