Patent ID: 9397480
Filing Date: 2016-07-19
CPC Classification: H01S

Claim Text:
1. An interband cascade laser, comprising: a multilayer structure including a ridge and two material removal areas adjacent to the ridge on either side, the multilayer structure being arranged on a substrate and a layer expansion plane being defined by a surface of the substrate, the ridge having at least one active region and at least the active region being spatially limited by passages between the ridge and the material removal areas in one dimension of the layer expansion plane, the active region having a layer structure for forming a laterally-coupled distributed feedback interband cascade laser, wherein at least in the material removal areas, an insulation layer and a superimposed grating structure layer are positioned, the insulation layer and the grating structure layer being arranged in the material removal areas such that the grating structure layer is arranged below, but not more than 100 nm below a bottom edge of the active region, and wherein the grating structure layer comprises a metal.