US 12,463,403 B2
Semiconductor laser and lidar system comprising the semiconductor laser
Martin Rudolf Behringer, Regensburg (DE); Bruno Jentzsch, Regensburg (DE); and Hubert Halbritter, Dietfurt-Toeging (DE)
Assigned to AMS-OSRAM INTERNATIONAL GMBH, Regensburg (DE)
Appl. No. 17/919,909
Filed by ams-OSRAM International GmbH, Regensburg (DE)
PCT Filed Apr. 21, 2021, PCT No. PCT/EP2021/060437
§ 371(c)(1), (2) Date Oct. 19, 2022,
PCT Pub. No. WO2021/214172, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 10 2020 205 253.0 (DE), filed on Apr. 24, 2020.
Prior Publication US 2023/0126297 A1, Apr. 27, 2023
Int. Cl. H01S 5/06 (2006.01); H01S 5/20 (2006.01); H01S 5/40 (2006.01)
CPC H01S 5/4043 (2013.01) [H01S 5/2022 (2013.01); H01S 5/2027 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A semiconductor laser comprising
a semiconductor layer arrangement having an active zone for generating radiation,
a first resonator mirror, a second resonator mirror and a resonator arranged between the first and second resonator mirrors, said resonator extending in a direction parallel to a first main surface of the semiconductor layer arrangement, and
a first wavelength-selective absorption element arranged between the semiconductor layer arrangement and the first resonator mirror,
wherein the first wavelength-selective absorption element has an absorber layer arranged at a position corresponding to the position of a node of the electric field strength at a target wavelength,
wherein an amount of radiation absorbed by the absorber layer is based on a temperature of the semiconductor layer, and
the first wavelength-selective absorption element furthermore has a transparent dielectric layer between the first resonator mirror and the absorber layer, wherein the transparent dielectric layer is dimensioned in such a way that a node of a standing wave that forms with the target wavelength is arranged in the absorber layer, wherein a plane of the transparent dielectric layer and of the absorber layer extends perpendicular to a light propagation direction.