Patent ID: 8331411

Claim:
An edge-emitting semiconductor laser comprising a semiconductor body, which comprises a waveguide region, wherein the waveguide region comprises a first waveguide layer, a second waveguide layer and an active layer arranged between the first waveguide layer and the second waveguide layer and serving for generating laser radiation, the waveguide region is arranged between a first cladding layer and a second cladding layer disposed downstream of the waveguide region in the growth direction of the semiconductor body, wherein the waveguide region has a thickness d of 400 nm or less, and an emission angle α p of the laser radiation emerging from the semiconductor body in a direction parallel to the layer plane of the active layer and the emission angle α s of the laser radiation emerging from the semiconductor body in a direction perpendicular to the layer plane of the active layer differ from one another by less than a factor of 3, the semiconductor body further comprising a first side facet that is a radiation coupling-out area with a reflection-increasing coating with a reflection of 95% or more; and said laser comprising a laser resonator having a length of 450 μm or less.