Journal
OPTICS AND LASER TECHNOLOGY
Volume 79, Issue -, Pages 74-78Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2015.11.022
Keywords
Yb lasers; Passively Q-switched; Yb:GdCOB crystal
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Funding
- Natural Science Foundation of Shandong Province, China [ZR2014FM008]
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We demonstrate efficient high-power CW and passively Q-switched operations of Yb:GdCa4O(BO3)(3) lasers. An output power of 18.2 W is generated at 1031.5 nm in CW mode, with optical-to-optical and slope efficiencies being respectively 55% and 70%, with respect to incident pump power. In passively Q-switched operation with a CO4+:YAG crystal as saturable absorber, a maximum average output power of 15.6 W is produced at a pulse repetition rate of 91 kHz, with an optical-to-optical efficiency of 44%. Low-repetition-rate Q-switched action is also realized, generating an average output power of 4.2 W at 5.7 kHz, the resulting pulse energy and duration are 737 mu J and 3.6 ns, leading to a peak power amounting to 205 kW. (C) 2015 Elsevier Ltd. All rights reserved.
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