TUNABLE OPTICAL PARAMETRIC OSCILLATOR BASED ON A KTP CRYSTAL, PUMPED BY A PULSED Ti{sup}(3+):Al{sub}2O{sub}3 LASER

摘要

We present the characteristics of an optical parametric oscillator based on a KTP crystal, pumped with non-critical phase matching by a pulsed Ti{sup}(3+):Al{sub}2O{sub}3 laser, tunable in the range 677-970 nm. Tunable generation of signal and idler waves is obtained in the ranges 1030-1390 nm and 2690-3050 nm respectively. The efficiency of conversion of the pump to the signal wave is ≈23%, which for pulses of duration ≈8 nsec ensures an energy in the range 1.0-11.5 mJ. The width of the emission spectrum for the signal wave is within the range 0.8-1.8 nm and is predominantly determined by the linewidth of the Ti{sup}(3+): Al{sub}2O{sub}3 pump laser.