Lead-tin telluride injection lasers prepared by diffusion of Sb

The method of donor diffusion was used to prepare Pb_1–xSn_xTe (x =0.18–0.24) laser diodes operating continuously at 10 K. The emission spectra of these lasers and the dependences of the spectra on the ambient temperature and injection current were investigated. The lasers were used in several high-resolution spectroscopy experiments.