Blue-green laser diodes made from II-VI semiconductors

Laser diodes fabricated from II-VI semiconductors are discussed. These devices emit coherent light at a wavelength of 490 nm from a ZnSe-based single-quantum-well structure under pulsed current injection at 77 K. The device structure consists of a Cd/sub 0.2/Zn/sub 0.8/Se single quantum well in a ZnSe-ZnS/sub 0.07/Se/sub 0.93/ waveguide, grown by MBE on a