Acousto-optically cavity dumped Tm:YAG laser with 54 ns pulses at 200 kHz repetition rate

Abstract

In this paper, a cavity dumped Tm:YAG laser was obtained for the first time, whose output pulse width was constant at 54 ns. Maximum repetition rate was 200 kHz, and wavelength was 2013 nm. Its average output power was 595 mW. The laser cavity length was 208 mm with an inserted acousto-optic modulator. Pulses were coupled out of the lateral surface of the cavity when Radio Frequency was added into the modulator. And lens was used to compensate the thermal focal length of Tm:YAG crystal. Numerical calculation of pulse was done.

Electro-optically cavity-dumped Ho:SSO laser with a pulse width of 3.6 ns and linewidth of 70 pm

“…In contrast, cavity-dumping technology is an attractive choice to obtain short pulse width under high repetition rate [5,6]. In 2014, the first acoustic-optically cavity-dumped Tm:YAG laser at 2013 nm was demonstrated with a pulse width of 54 ns at a pulse repetition rate of 200 kHz [7]. In the same year, with a similar laser setup, an acoustic-optically cavity-dumped Tm:YAP laser at 1989.9 nm was reported with a pulse width of 43 ns [8].…”