10.1007/s11453-008-2009-6

Abstract

The experimental observation of stimulated radiation of optically pumped Cd x Hg 1 -x Te-based heterostructures in the wavelength range of 1.4-4.5 µ m is reported. In the experiments, graded-gap Cd x Hg 1 -x Te samples grown on GaAs and Si substrates by molecular beam epitaxy were used. Superluminescence of such structures was observed at 77-300 K under the pulsed pumping of the samples by a Nd:YAG laser at a wavelength of 1.064 µ m. At room temperature, stimulated radiation was observed at wavelengths of 1.4-1.7 µ m. The obtained experimental data are the first results on the observation of stimulated radiation from graded-gap Cd x Hg 1 -x Te structures on Si and GaAs substrates at these wavelengths at room temperature.