Patent ID: 8228965
Filing Date: 2012-07-24
Classification: B82Y,H01S

Abstract:
1. A surface emitting laser which is configured by laminating on a substrate a lower reflection mirror, an active layer, and an upper reflection mirror, which includes, in a light emitting section of the upper reflection mirror, a structure for controlling reflectance that is configured by a low reflectance region and a concave high reflectance region formed in the central portion of the low reflectance region, and which oscillates at a wavelength of λ, wherein the upper reflection mirror is configured by a multilayer film reflection mirror based on a laminated structure formed by laminating a plurality of layers, the multilayer film reflection mirror includes a phase adjusting layer which has an optical thickness in the range of λ/8 to 3λ/8 in a light emitting peripheral portion on the multilayer film reflection mirror, and an absorption layer causing band-to-band absorption is provided on a surface side from a layer laminated at the middle point in thickness of the laminated structure that configures the multilayer film reflection mirror, wherein the absorption layer is provided within five pairs of layers from the surface side of the laminated structure.