High-peak-power Q-switched 1988 nm bulk laser based on an electro-optical La3Ga5SiO14 modulator

摘要

An electro-optically (EO) Q-switched Tm:YAP laser with high peak power was demonstrated based on a La3Ga5SiO14 (LGS) crystal. The EO modulator was operated in a pulse-on mode driven by a 1/4 wave voltage of 2400 V, which was the lowest voltage designed for LGS-based EO modulators at 2 mu m, to the best of our knowledge. At a repetition rate of 200 Hz, a maximum single-pulse energy of 3.15 mJ was obtained with a minimum pulse duration of 17 ns, corresponding to a peak power as high as 185.3kW. (C) 2020 Optical Society of America