Patent ID: 9559494
Date: 2017-01-31
CPC Classifications: H01S

Claim:
1. An edge emitting semiconductor laser comprising a semiconductor body which comprises a waveguide region wherein the waveguide region comprises 1) a first waveguide layer, 2) a second waveguide layer and 3) an active layer arranged between the first waveguide layer and the second waveguide layer, that generates laser radiation, the waveguide region is arranged between a first cladding layer and a second cladding layer disposed downstream of the waveguide region in a growth direction of the semiconductor body, a phase structure for selection of lateral modes of the laser radiation emitted by the active layer formed in the semiconductor body, wherein the phase structure comprises at least one cutout extending from a top side of the semiconductor body into the second cladding layer, at least one first intermediate layer composed of a semiconductor material different from semiconductor material of the second cladding layer that is embedded into the second cladding layer, the cutout at least partly extends from a top side of the semiconductor body into the first intermediate layer, the second cladding layer contains a first partial layer that adjoins the waveguide region, and a second partial layer arranged above the first partial layer, wherein the first partial layer has a greater refractive index than the second partial layer, and the at least one intermediate layer is embedded into the first partial layer of the second cladding layer.