期刊
OPTICS LETTERS
卷 45, 期 18, 页码 5287-5290出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.401956
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资金
- National Key Research and Development Program of China (973 Project) [2015CB755403]
- National Natural Science Foundation of China [61771332, 61775160, 62011540006, U1837202]
A high-energy, tunable, long-wave mid-infrared optical parametric oscillator (OPO) based on the BaGa4Se7 crystal was demonstrated in this Letter with 1064 nm laser pumping. The mid-infrared OPO was designed as a double-pass single resonant oscillator (DP-SRO) to reduce the threshold and improve the outputs. Further optimization on the cavity length was theoretically and experimentally studied. With a short cavity length of 30 mm, the output energy of over 1 mJ/pulse at 11 mu m was obtained with the pump energy of 39.5 mJ/pulse. In addition, a wide tuning range of 8-14 mu m was experimentally achieved by rotating the BaGa4Se7 crystal. (C) 2020 Optical Society of America
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