| High-energy picosecond single-pass multi-stage optical parametric generator and amplifier |
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| 作者姓名： | 余洋 刘钊 刘可 马超 高宏伟 王小军 薄勇 崔大复 彭钦军 |
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| 作者单位： | 1.Key Laboratory of Solid-state Lasers, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2.Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;3.University of Chinese Academy of Sciences, Beijing 100190, China |
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| 基金项目： | the National Science Foundation for Young Scientists of China(Grant No.61805259);Youth Innovation Promotion Association,CAS,and Chinese Academy of Sciences funding(Grant No.ZDRW-KT2019-4-01). |
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| 摘 要： | We demonstrate a new management of multi-stage optical parametric generator(OPG)and amplifier(OPA)to obtain high-energy picosecond sources with high beam quality.The setup of multi-stage OPG-OPA requires mode-matching between the pump beam and the stable mode of the OPG-OPA.In a proof-of-principle experiment,the single-pass multi-stage OPG-OPA consists of three walk-off compensated KTP crystal pairs and two lenses,pumped by an 86 ps,1064 nm 10 kHz picosecond laser.The signal light at~1.77μm has an average output power of 502 mW with record energy up to 50.2μJ.The beam quality factor of the signal light can be improved toM2x ×M2yafter filtering out about 40%signal power.To the best of our knowledge,it is the first picosecond single-pass multi-stage OPG-OPA pumped at kHz regime.
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| 关 键 词： | HIGH-ENERGY PICOSECOND optical parametric frequency conversion |
| 收稿时间： | 2021-04-16 |
High-energy picosecond single-pass multi-stage optical parametric generator and amplifier |
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| Yang Yu,Zhao Liu,Ke Liu,Chao Ma,Hong-Wei Gao,Xiao-Jun Wang,Yong Bo,Da-Fu Cui,Qin-Jun Peng.High-energy picosecond single-pass multi-stage optical parametric generator and amplifier[J].Chinese Physics B,2022,31(1):14204-014204. |
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| Authors: | Yang Yu Zhao Liu Ke Liu Chao Ma Hong-Wei Gao Xiao-Jun Wang Yong Bo Da-Fu Cui Qin-Jun Peng |
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| Affiliation: | 1.Key Laboratory of Solid-state Lasers, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2.Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;3.University of Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | We demonstrate a new management of multi-stage optical parametric generator (OPG) and amplifier (OPA) to obtain high-energy picosecond sources with high beam quality. The setup of multi-stage OPG-OPA requires mode-matching between the pump beam and the stable mode of the OPG-OPA. In a proof-of-principle experiment, the single-pass multi-stage OPG-OPA consists of three walk-off compensated KTP crystal pairs and two lenses, pumped by an 86 ps, 1064 nm 10 kHz picosecond laser. The signal light at ~1.77 μm has an average output power of 502 mW with record energy up to 50.2 μJ. The beam quality factor of the signal light can be improved to $M_{x}^{2} \times M_{y}^{2}=1.87\times 2.16$ after filtering out about 40% signal power. To the best of our knowledge, it is the first picosecond single-pass multi-stage OPG-OPA pumped at kHz regime. |
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| Keywords: | high-energy picosecond optical parametric frequency conversion |
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