Room‐temperature stimulated emission in optically pumped narrow ZnSe/ZnSxSe1−xmultiple‐quantum‐well structures

Abstract
Room‐temperature stimulated emission in ZnSe/ZnS0.18Se0.82 multiple‐quantum‐well structure is reported. An optical excitation threshold around 300 kW/cm2 at 300 K and 8.4 kW/cm2 at 10 K was measured. An unsaturated optical gain coefficient of the order of 5×102 cm−1 has been measured at low temperature.