OPTICALLY PUMPED LOW-THRESHOLD ZNSE BASED LASERS WITH 2.8 ML CDSE ACTIVE-REGION

Room-temperature optically pumped (Zn,Mg) (S,Se)/(Zn,Cd)Se laser struc tures have been grown by molecular beam epitaxy. Using of alternativel y-strained short-period superlattice waveguide results in low threshol d power density values over the whole blue-green (470-520 nm)wavelengt h range. Incorporation of CdSe fractional monolayer active region prov ides more than fourfold further decrease in threshold with respect to quantum well laser structure. Optical and structural properties of las er structure with 2.8 monolayer CdSe are discussed in detail.