Project supported by the National Natural Science Foundation of China (Grant Nos 60506001,60776047,60476021,60576003 and 60836003);the National Basic Research Programme of China (Grant No 2007CB936700)
A violet laser diode (LD) structure is grown on a free-standing c-plane GaN substrate and 4 μm×800μm ridge waveguide LDs are fabricated. The electrical and the optical characteristics of LDs under different facet...