Abstract:We report recent results on THz lasing in PbSnSe and HgCdTe. The wavelength of 46.3 microns was achieved in a PbSnSe laser with diffusion p-n junction. In HgCdTe waveguide structure with quantum wells (QWs) we demonstrate twofold increase in stimulated emission (SE) wavelength compared to previous works. The threshold pumping intensity is as low as 0.12 kW/cm 2 for the SE wavelength of 9.5 microns. Molecular beam epitaxy of HgCdTe allows reproducible growth of thin QWs that can provide the "symmetrical" energy… Show more
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