ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Kerr-lens mode-locked polycrystalline Cr: ZnS femtosecond laser pumped by a monolithic Er: YAG laser |
Chengfeng Hu(胡呈峰)1, Jiangfeng Zhu(朱江峰)1, Zhaohua Wang(王兆华)2, Xintong Sun(孙芯彤)1, Long Wei(魏龙)1, Weijun Ling(令维军)3, Zhong Dong(董忠)3, Qing Wang(王庆)4, Chunqing Gao(高春清)4, Zhiyi Wei(魏志义)1,2 |
1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3. Department of Physics, Tianshui Normal University, Tianshui 741000, China;
4. Department of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China |
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Abstract We demonstrated a Kerr-lens mode-locked polycrystalline Cr:ZnS laser pumped by a narrow-linewidth linear-polarised monolithic Er:YAG nonplanar ring oscillator operated at 1645 nm. With a 5-mm-thick sapphire plate for intracavity dispersion compensation, a compact and stable Kerr-lens mode-locking operation was realised. The oscillator delivered 125-fs pulses at 2347 nm with an average power of 80 mW. Owing to the special polycrystalline structure of the Cr:ZnS crystal, the second to fourth harmonic generation was observed by random quasi-phase-matching.
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Received: 19 September 2016
Revised: 13 October 2016
Accepted manuscript online:
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PACS:
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.55.Rz
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(Doped-insulator lasers and other solid state lasers)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61205130, 61465012, and 61564008). |
Corresponding Authors:
Jiangfeng Zhu, Zhiyi Wei
E-mail: jfzhu@xidian.edu.cn;zywei@iphy.ac.cn
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Cite this article:
Chengfeng Hu(胡呈峰), Jiangfeng Zhu(朱江峰), Zhaohua Wang(王兆华), Xintong Sun(孙芯彤), Long Wei(魏龙), Weijun Ling(令维军), Zhong Dong(董忠), Qing Wang(王庆), Chunqing Gao(高春清), Zhiyi Wei(魏志义) Kerr-lens mode-locked polycrystalline Cr: ZnS femtosecond laser pumped by a monolithic Er: YAG laser 2017 Chin. Phys. B 26 014206
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