Operation and dynamics of ZnSe/ZnMgSSe double heterostructure blue laser diode at room temperature

Room‐temperature operation of ZnSe‐active‐layer double heterostructure laser diode has succeeded. The lasing wavelength was 471 nm. The emission energy shift with the increasing current is explained by the band filling and the band shrinkage. The threshold carrier density is calculated to be 4×1018 cm−3. The mechanism of the stimulated emission of II–VI double heterostructure laser diode is concluded to be the recombination of the electron‐hole plasma.