Patent ID: 8916849

Claim:
An optoelectronic semiconductor chip comprising: a carrier; and a semiconductor layer sequence mounted on the carrier, the semiconductor layer sequence based on a nitride compound semiconductor material and comprising: an active zone configured to generate electromagnetic radiation, a waveguide layer adjoining the active zone, a waveguide being formed by the waveguide layer and the active zone, and a cladding layer comprising a p-cladding layer adjoining the waveguide layer on a p-doped side and/or an n-cladding layer on an n-doped side of the active zone, wherein an effective refractive index in the waveguide is greater than a refractive index of the carrier, wherein an evanescent field of the radiation totally reflected at the p-cladding layer or at the n-cladding layer and generated in the active zone extends as far as into the carrier, and wherein an amplitude of the evanescent field in the carrier, relative to an output amplitude at a totally reflecting boundary surface, amounts in places to at least 2.5%.