An intracavity frequency-doubled vertical external cavity surface emitting laser(VECSEL)with green light is demonstrated.The fundamental frequency laser cavity consists of a distributed Bragg reflector (DBR)of the gain chip and an external mirror.A 12-mW frequency-doubled output has been reached at 540 nm with a nonlinear crystal LBO when the fundamental frequency output is 44 mW at 1080 nm.The frequency doubling efficiency is about 30%.
