Patent ID: 9559496
Date: 2017-01-31
CPC Classifications: H01S

Claim:
1. A laser light source, comprising a semiconductor layer sequence having an active region and a radiation coupling out area having a first partial region and a second partial region different than the first partial region, and a filter structure, wherein the active region generates, during operation, coherent first electromagnetic radiation having a first wavelength range and incoherent second electromagnetic radiation having a second wavelength range, the coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region, the second wavelength range comprises the first wavelength range, the filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted by the active region along the emission direction, the filter structure comprises at least one first filter element disposed downstream of the semiconductor layer sequence in the emission direction, the at least one first filter element has at least one layer comprising a material that is non-transparent to electromagnetic radiation, and the non-transparent material is at least partly arranged on the second partial region.