crystal diode
6.Laser diode direct coupling pumped Nd∶YVO 4/KTP intracavity frequency doubling laser was demonstrated by closing the Nd∶YVO 4 crystal to the emitting area of laser diode. Green laser of TEM 00 mode at 532 nm with a maximum output of 73 mW and a optical to optical efficiency of 14.5% were obtained, when pump power was 503 mW.

