Bragg mirror with superlattice for compensation of lattice mismatch

摘要

The semiconductor element (10) has a layer pair (11) with a layer (12) having refractive index and a lattice constant. Another layer (13) has another refractive index which is different from the former refractive index. The former layer is formed as a super lattice (23) by different periodically replicating layers that are applied on one another. The former lattice constant is adapted to the latter lattice constant of the latter layer. Independent claims are also included for: (1) a bragg mirror with a series of strata in a super lattice or multiple layer pairs determines the wavelength with maximum reflectivity, particularly in an area between 550 nanometers and 750 nanometers; and (2) a surface emitter, particularly a vertical resonator, micro cavity or micro column with a bragg mirror and a quantum film from an optically active medium, particularly cadmium zinc telluride which comprises magnetic portions, particularly manganese ions.