Proposal for an unstrained nanoheterolaser generating a mainly TM-polarized radiation

A semiconductor interband laser based on an unstrained one or multiple quantum well nanoheterostructure and generating a mainly TM-polarized radiation is suggested. The latter feature is ensured by a planar waveguide with a special design, in which, due to the plasmon effect, the absorption of TM modes is smaller than that of TE ones. Via developing a two-dimensional distributed Bragg feedback concept such a device can be employed for the creation of powerful sources of monochromatic near-infrared radiation with high-quality output beams formed by a small number of or even only one lateral mode.