Patent ID: 7697586
Filing Date: 2010-04-13
Classification: B82Y,H01S

Abstract:
1. A surface-emitting laser, comprising a plurality of semiconductor layers laminated on a substrate, the plurality of semiconductor layers including a lower semiconductor multilayer reflection mirror, an active layer, and an upper semiconductor multilayer reflection mirror, wherein one of the lower semiconductor multilayer reflection mirror and the upper semiconductor multilayer reflection mirror includes a first semiconductor layer having a two-dimensional photonic crystal structure that includes a high refractive index portion and a low refractive index portion, which are arranged in a direction parallel to the substrate, wherein a second semiconductor layer laminated on the first semiconductor layer includes a microhole, which reaches the low refractive index portion, a cross section of the microhole in the direction parallel to the substrate being smaller than a cross section of the low refractive index portion of the first semiconductor layer, wherein the first semiconductor layer includes one of an AlGaAs layer and an AlAs layer, and wherein the first semiconductor layer has an Al compositional ratio that is higher than an Al compositional ratio of the second semiconductor layer and higher than an Al compositional ratio of a semiconductor layer formed under the first semiconductor layer.