Photopumped Blue Lasers with ZnSSe-ZnMgSSe Double Heterostructure and Attempt at Doping in ZnMgSSe

Abstract

We observed the lasing operation of ZnSSe-ZnMgSSe double heterostructure (DH) photopumped blue lasers up to 500 K. The wavelength at room temperature (RT) and threshold intensity at 300 K were 464.5 nm and 105 kW/cm 2 , respectively. Characteristic temperature ( T 0 ) was estimated to be 170 K. These results indicate that this structure has good thermal stability. Both n-type and p-type doping in ZnMgSSe were successfully performed. Both n-type and p-type ZnMgSSe show good properties for fabricating laser diodes.