Patent ID: 9673590
Date: 2017-06-06
CPC Classifications: H01L,H01S

Claim:
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 semiconductor region 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 located between the second semiconductor region and 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, wherein the thermal insulation apparatus is realized by a narrow portion in the stripe waveguide so that a temperature on the second electrical contact is increased during operation, wherein a width of the stripe waveguide in the narrowed portion amounts at most to 80 percent of a total width of the stripe waveguide, wherein a top face of the stripe waveguide is broader than the narrowed portion when seen in a sectional view, and wherein the stripe waveguide forms an I-shape when seen in the sectional view.