Translator Disclaimer
Paper
21 February 2020 Multi-watt continuous-wave and passively Q-switched Tm:CaYAlO4 micro-lasers
Author Affiliations +
Abstract
Tetragonal calcium rare-earth aluminates, CaLnAlO4, combine a structural disorder with good thermo-mechanical properties. We report on efficient continuous-wave (CW) and passively Q-switched (PQS) ~2-μm laser operation of a 4 at.% Tm:CaYAlO4 crystal using a compact (6-mm-long) plane-parallel cavity. The pump source was a 791 nm fibercoupled AlGaAs laser diode. The CW output power reached 5.78 W at ~1970 nm with a slope efficiency of 43.6% and a linear laser polarization. Stable PQS operation was achieved using a single-walled carbon nanotube (SWCNT) based transmission-type saturable absorber. The PQS laser generated 2.15 W at ~1945 nm, a record-high average output power for this type of lasers. The best pulse characteristics (energy/duration) were 9.1 μJ/165 ns at a repetition rate of 235 kHz.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mengting Chen, Pavel Loiko, Fangxin Yue, Venkatesan Jambunathan, Antonio Lucianetti, Tomas Mocek, Josep Maria Serres, Magdalena Aguiló, Francesc Díaz, Tae Gwan Park, Ji Eun Bae, Fabian Rotermund, Xiaodong Xu, Jun Xu, Shibo Dai, Zhenqiang Chen, Uwe Griebner, Valentin Petrov, Xavier Mateos , and A. Major "Multi-watt continuous-wave and passively Q-switched Tm:CaYAlO4 micro-lasers", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 1125927 (21 February 2020); https://doi.org/10.1117/12.2545710
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Multi watt passively Q switched Yb YAB Cr YAG microchip...
Proceedings of SPIE (February 17 2017)
Ceramic Yb:YAG microchip laser
Proceedings of SPIE (February 28 2006)

Back to Top