Patent ID: 9054487
Filing Date: 2015-06-09
Classification: H01L,H01S

Abstract:
1. A semiconductor stripe laser comprising: a first semiconductor region of a first conductivity type; a second semiconductor region of a second conductivity type that is different than the first conductivity type; an active zone configured to generate laser radiation, the active zone located between the first and the second semiconductor region; a stripe waveguide formed in the second semiconductor region, arranged to guide waves in a one-dimensional manner, and arranged for a current density of at least 0.5 kA/cm a first electrical contact on the first semiconductor region; a second electrical contact on the second semiconductor region and on an electrical contact structure for external electrical contacting of the semiconductor stripe laser; an electrical passivation layer provided in certain places on the stripe waveguide; and a thermal insulation apparatus located between the second electrical contact and the active zone, the thermal insulation apparatus being located completely or partially inside the stripe waveguide; wherein the thermal insulation apparatus is formed by one or a plurality of semiconductor layers of the second semiconductor region and an average thermal conductivity of the one or a plurality of semiconductor layers amounts at the most to 60 W/mK at room temperature; wherein the one or plurality of semiconductor layers of the insulation apparatus comprises Al wherein a thickness of the thermal insulation apparatus is at least 20 nm, a spacing between the thermal insulation apparatus and the second electrical contact is at least 100 nm and a spacing between the thermal insulation apparatus and the active zone is at least 200 nm; wherein a layer of the second semiconductor region located closest to the second electrical contact is formed from p-doped GaN; and wherein the one or plurality of semiconductor layers completely spans the stripe waveguide.