Optically pumped near ultraviolet vertical cavity laser operation (VCSEL) h
as been obtained under quasi-continuous wave conditions at room temperature
near 383nm from shallow InGaN/GaN multiple quantum wells (MQWs). Low loss
optical resonators were fabricated by using in-situ grown (Al,Ga)N distribu
ted Bragg reflectors that featured strain engineering design for high optic
al morphology, in combination with low-loss dielectric multilayer mirrors.