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15 May 2012A highly efficient resonantly pumped Ho:YAG laser
An efficient high-peak-power Ho:YAG hybrid laser resonantly pumped by a 20 W linearly polarized Tm:fiber laser
at the wavelength of 1908 nm was developed. At room temperature a maximum continuous output power of 10.7 W
with a slope efficiency of over 55% with respect to the incident pump power was achieved. In Q-switching regime
an acousto-optic modulators were applied. The research was conducted for normal and Brewster's angle Q-switches
respectively. In CW pumping regime the repetition rate was changed from 500 Hz to 5000 Hz. For the best case, for
5 kHz repetition rate, pulses of 1.6 mJ energy and 123 kW peak-power were achieved at the wavelength of 2090.2 nm
with an M2 ≈ 1.6.
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Jacek Kwiatkowski, Jan K. Jabczynski, Waldemar Zendzian, Jacek Swiderski, Mateusz Kaskow, Lukasz Gorajek, "A highly efficient resonantly pumped Ho:YAG laser," Proc. SPIE 8433, Laser Sources and Applications, 84331J (15 May 2012); https://doi.org/10.1117/12.921757