Diode-pumped self-frequency doubling in a Nd3+: YCa4O(BO3)(3) laser

We report efficient, diode-pumped, self-frequency doubling (SFD) in the new ly developed laser crystal Nd3+:YCa4O(BO3)(3). More than 350 mW of fundamen tal output power at 1060 nm was achieved with a slope efficiency of 51%. Wi th one watt of absorbed pump power, 62 mW of green cw laser emission at 530 nm was observed with proper phase matching. This initial performance, and the good optical properties of the crystalline host, are encouraging for th e development of a high power diode-pumped SFD visible light laser source. (C) 1999 American Institute of Physics. [S0003-6951(99)01614-9].