期刊
OPTICS LETTERS
卷 44, 期 11, 页码 2839-2842出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.002839
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资金
- Key Research and Development Program of Shandong Province [2018GGX102005]
- National Key Research and Development Program of China [2017YFA0701000]
- National Natural Science Foundation of China (NSFC) [51872290, 61775123]
- Natural Science Foundation of Qingdao [18-2-2-11-jch]
- SDUST Research Fund [2019TDJH103]
We report on continuous-wave (CW) and rhenium diselenide (ReSe2) Q-switched dual-wavelength mid-infrared (MIR) laser performances of Er:YAP crystal in this Letter. Under an absorbed pump power of 5.5 W, a maximum CW Er:YAP laser output power of 1.02 W is obtained, corresponding to a slope efficiency of 25.3%. With multilayer ReSe2 material as a saturable absorber, a stable Q-switched Er: YAP crystal laser with dual-wavelength output of 2.73 and 2.80 mu m is realized for the first time, to the best of our knowledge. The nonlinear optical measurements of the multilayer ReSe2 reveal efficient saturable absorption properties around 3 mu m showing a modulation depth of 7.5% and a saturation intensity of 14.5 mu J/cm(2). The maximum Q-switching output power reaches 526 mW, and the corresponding laser power jitter is around 3% in 1 h. The shortest pulse duration and the highest pulse repetition rate are 202.8 ns and 244.6 kHz, respectively. These results prove that Er:YAP crystal could be a reliable laser crystal for MIR solid-state lasers. (C) 2019 Optical Society of America
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