Patent ID: 8537869
Filing Date: 2013-09-17
Classification: H01S

Abstract:
1. A diode laser, comprising: a first contact for the injection of charge carriers, a first cladding layer, wherein the first contact contacts the first cladding layer, a first wave guiding layer arranged on the first cladding layer, an active layer suitable for emitting radiation, said active layer being arranged on the first wave guiding layer, a second wave guiding layer arranged on the active layer, and a second cladding layer arranged on the second wave guiding layer, and a second contact for the injection of charge carriers, wherein the second contact contacts the second cladding layer, and wherein the active layer, the first contact and the second contact each extend at least partially between an emitting facet and a reflecting facet, wherein the active layer, the first contact and the second contact each have a width larger than 10 μm, and that an anti-wave guiding layer is positioned outside the active region enclosed between the contacts, wherein the refractive index of the anti-wave guiding layer is larger than the minimum refractive index of the cladding layers, and wherein the minimum distance between the anti-wave guiding layer and a projection of one of the contacts on the plane of the anti-wave guiding layer lies between 0 and 100 μm.