Abstract
Luminescence of CdSe single crystals excited by high intensity light pulses has been investigated in the temperature region 4·2–77°K. The rate of increase of the intensity of several free and bound excition lines as a function of excitation intensity has been determined. The line with the highest rate of increase has been interpreted as being due to interaction of two free excitons. Electron-beam pumped laser emission from this line has been obtained at low temperatures and its contribution to the laser emission at higher temperatures is discussed.
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