期刊
HIGH POWER LASER SCIENCE AND ENGINEERING
卷 11, 期 -, 页码 -出版社
CHINESE LASER PRESS & CAMBRIDGE UNIV PRESS
DOI: 10.1017/hpl.2022.45
关键词
few-optical-cycle pulses; high pulse repetition rate; nonlinear pulse compression
类别
资金
- National Natural Science Foundation of China [62005144, 61775119, 62175128]
- Natural Science Foundation of Shandong Province [ZR2020QF096]
- Qilu Young Scholar Program of Shandong University
- Taishan Scholar Foundation of Shandong Province [tsqn201812010]
- High-level Talent Cultivation Funds of the State Key Laboratory of Crystal Materials of Shandong University
This article reports on a 2-mu m all-fiber nonlinear pulse compressor based on normal dispersion fiber, which enables watt-level high-power scaling ability and a high pulse compression ratio. Experimental and numerical analysis results show the performance characteristics of the compressor.
We firstly report a 2-mu m all-fiber nonlinear pulse compressor based on two pieces of normal dispersion fiber (NDF), which enables a high-power scaling ability of watt-level and a high pulse compression ratio of 13.7. With the NDF-based all-fiber nonlinear pulse compressor, the 450-fs laser pulses with a repetition rate of 101.4 MHz are compressed to 35.1 fs, corresponding to a 5.2 optical oscillation cycle at the 2-mu m wavelength region. The output average power reaches 1.28 W, which is believed to be the highest value never achieved from the previous 2-mu m all-fiber nonlinear pulse compressors with a high pulse repetition rate above 100 MHz. The dynamic evolution of the ultrafast pulse inside the all-fiber nonlinear pulse compressor is numerically analyzed, matching well with the experimental results.
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