Study of the auger recombination energy threshold in a series of waveguide heterostructures with HgTe/Cd$_{0.7}$Hg$_{0.3}$Te QWs near 14 $\mu$m

Stimulated emission from a heterostructure with HgTe/Cd$_{0.7}$Hg$_{0.3}$Te quantum wells, placed in a waveguide layer of wide-gap CdHgTe, is obtained at wavelengths of 14–11 $\mu$m and a temperatures of 18–80 K. The threshold Auger recombination energy is calculated for a set of heterostructures with quantum wells of pure HgTe with a band gap of 90 meV (wavelength 14 $\mu$m). The possibility of fabricating lasers operating at 14 $\mu$m and working temperatures higher than that of liquid nitrogen is demonstrated.