
A simple way to achieve 8W CW output green laser with intra-cavity frequency doubling in a Nd∶ YVO4 laser doubly longitudinally pumped by two diode lasers is reported. With I-type non-critical-phase-match(NCPM) and temperature tuning of LBO crystal, a maximum of 8 W continuous-wave output at 0.532 μm has been obtained. With 28.9 W pump power, the optical-optical conversion efficiency is 27.7%