Patent ID: 9722394
Date: 2017-08-01
CPC Classifications: H01S

Claim:
1. A semiconductor laser diode comprising: a semiconductor layer sequence having semiconductor layers applied vertically one above the other including an active layer which comprises an active region having a width of greater than or equal to 30 μm, the active layer configured to emit laser radiation during operation via a radiation coupling-out surface, wherein the radiation coupling-out surface is formed by a lateral surface of the semiconductor layer sequence and forms, with an opposite rear surface, a resonator having lateral gain-guiding in a longitudinal direction, and wherein the semiconductor layer sequence is configured to be heated in a thermal region of influence by reason of the operation; a metallization layer in direct contact with at least a sub-region of a top side of the semiconductor layer sequence, wherein the top side comprises a semiconductor cover layer, and wherein the metallization layer has a cumulative width and a ratio of the cumulative width to a width of the thermal region of influence varies in dependence upon a distance to the radiation coupling-out surface; a structured heat-dissipating layer on the top side of the semiconductor layer sequence, wherein the structured heat-dissipating layer comprises at least the metallization layer, wherein the structured heat-dissipating layer allows heat dissipation from the active region which varies in a longitudinal and/or a lateral direction; and an internal heat sink in direct contact with the metallization layer, wherein the structured heat-dissipating layer comprises the internal heat sink, wherein the internal heat sink has a structuring at least in the lateral and/or the longitudinal direction, wherein structuring of the internal heat sink comprises materials having different thermal conductivities such that the internal heat sink has a first material which is arranged laterally between regions having a second material, wherein the first material has a higher thermal conductivity than the second material, and wherein the first material has a width that becomes smaller as a longitudinal distance to the radiation coupling-out surface increases.