High efficient CW Nd:MgO:LiNbO3 self-frequency doubling laser

A new cw self-frequency-doubling laser operating on high-gain polarization of Nd:MgO:LiNbO3 has been demonstrated in a nearly concentric resonator. A maximum second-harmonic output of 4.6 mW and a conversion efficiency up to 11.7% per watt were achieved.