Room-temperature photopumped blue lasing in ZnSe-ZnS0.06Se0.94 double heterostructures

We present results on room-temperature photopumped lasing action in the blue region (∼4650 Å) of the spectrum for double heterostructures with ZnSe active layers. The confining layers are ZnS0.06Se0.94, providing lattice match to the GaAs substrate. The room-temperature lasing, observed under pulsed excitation, yields threshold pump intensity as low as 58 kW cm−2 for an active layer thickness of 1500 Å.