Journal
OPTICS EXPRESS
Volume 26, Issue 23, Pages 30195-30201Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.030195
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Funding
- National Natural Science Foundation of China (NSFC) [61405047, 51472251, 51572053, 61805209]
- Science Fund for Outstanding Youths of Heilongjiang Province [JQ201310]
- Fundamental Research funds for the Central Universities [HIT.NSRIF.2014044, 2015042]
- Fundamental Research funds for the Provincial Universities [WL17B14]
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In this paper we present a high power long-wave infrared ZnGeP2 (ZGP) optical parametric amplifier (OPA) pumped by a 2097-nm Q-switched Ho:YAG laser with pulse repetition frequency of 20 kHz. When the incident Ho pump power was 116.0 W, the maximum average output power of 11.4 W at 8.3 mu m was achieved in the ZGP OPA. The optical conversion efficiency from Ho to long-wave infrared was about 9.8%. The ZGP OPA produced 30.4 ns long-wave infrared laser pulse. The beam quality factor (M-2) of ZGP OPA was measured to be about 2.9 at the maximum average output power. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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