High power and efficiency of a 2044-nm c-cut Tm, Ho:YAlO3 laser
- 2 February 2011
- journal article
- Published by Pleiades Publishing Ltd in Laser Physics
- Vol. 21 (3), 489-492
- https://doi.org/10.1134/s1054660x11050173
Abstract
A high power and efficiency of c-cut Tm, Ho:YAlO3 (YAP) laser is reported in the paper. The laser operated in continuous wave (CW) mode or Acousto-optical (AO) Q-switched mode at 2044 nm. The Tm, Ho:YAP crystal was cooled at the temperature of 77 K and pumped by a fiber-coupled laser diode (LD) with the centre output wavelength of 794.8 nm. In CW operation, a 9.30-W output power was obtained at a 150-mm physical cavity length, corresponding to a slope efficiency of 42.5%. In Q-switch mode, the output average power of 9 W was achieved at the pulse repetition frequency (PRF) of 10 kHz with a 130-ns pulse width. Moreover, the energy per pulse of 3.54 mJ in 47 ns was acquired at 2.5 kHz with a 75.3-kW peak power.Keywords
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