Patent ID: 11942763
Assignee: OSRAM OLED GMBH
Field: Optics (Instruments)
Classification: CPC H  B | IPC B  H

Claim 8:
9. A semiconductor laser comprising:
a semiconductor layer sequence on a basis of a material system AlInGaN with at least one active zone, and
at least one heat sink to which the semiconductor layer sequence is thermally connected and to which the semiconductor layer sequence has a thermal resistance,
wherein the semiconductor layer sequence is divided into a plurality of emitter strips and each emitter strip has a width between 15 μm and 150 μm inclusive in a direction perpendicular to a beam direction, the emitter strips are arranged with a filling factor (FF) between 0.07 and 0.18 inclusive, and the filling factor (FF) is a quotient of a width b of the emitter strips and a periodicity N of the emitter strips and is set so that laser radiation having a maximum achievable electro-optical conversion efficiency generated during operation,
wherein the following applies to the filling factor (FF) as a function of thermal resistance Rth:

FF=(0.18W2/K2Rth2−0.40W/K Rth+0.30)±0.02,

wherein each of the emitter strips are each configured as strip waveguides, wherein the at least one active zone is removed between adjacent emitter strips.