Influence of laser irradiation on Hg1-xMnxTe photoelectrical properties

We have carried out experimental investigation of spectral and temperature dependences of photoconductivity in n-type Hg1-xMnxTe (x = 0.1) and studied an influence of nanosecond pulses of ruby laser irradiation on such properties. It has been shown that irrdiation of the samples with sub-threshold energy densities (E much less than E-th = 0.18 J/cm(2)) does not cause a change of their photosensitivity and leads to the surface refining from impurity atoms and oxides, A laser treatment, of the samples with energy densities E > E-th stimulates a rise of the defect number in the crystals that causes a change of the lifetime characteristics and photosensitivity lowering.