Multi-pass quadrature arrangement using CsLiB/sub 6/O/sub 10/ crystals for highly efficient second-harmonic generation of high-power Nd:YAG laser

For frequency doubling of high-power Nd:YAG laser, harmonically converted laser energy (532nm) of 2.73 J at 10 Hz have been generated at external conversion efficiency of 83 % in multipass quadrature arrangement using CsLiB/sub 6/O/sub 10/ crystals.