Tunable infrared parametric generation in cesium dihydrogen arsenate

Parametric generation of near infrared coherent light, tunable over the range 854-1410 nm, was obtained in an oscillator using a 3-cm crystal of cesium dihydrogen arsenate (CDA). Pumping was accomplished with 10-ns pulses of 532-nm light from a frequency-doubled Nd:YAG laser. Single-pass parametric gains of the order of 300 were obtained in the crystal. The infrared output pulses typically were 1 ns in duration, with a peak power of approximately 600 kW.