Abstract
There have been major recent developments in the wide bandgap II–VI heterostructures which have culminated in the demonstration of the blue-green diode laser.1,2 These new devices are based on the (Zn,Cd)Se/ZnSe quantum well system which has been shown to be a good type I heterostructure with strong excitonic effects present up to room temperatures.3,4 Another critical development leading to the diode laser breakthrough was the successful p-type doping of the ZnSe-based compounds. Following such a proof-of-concept demonstration of diode laser action, a number of further development issues can now be addressed. Among these are variations and improvements in the laser resonator designs.
© 1992 Optical Society of America
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