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Generation of high beam quality, high-energy and broadband tunable mid-infrared pulse from a KTA opt

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外文题目: Generation of high beam quality, high-energy and broadband tunable mid-infrared pulse from a KTA optical parametric amplifier
作者: Chen, Yun; Li, Yanyan; Li, Wenkai; Guo, Xiaoyang; Leng, Yuxin
刊名: Opt. Commun.
年: 2016 卷: 365 页: 7--13
英文关键词:
Mid-infrared laser sources; Optical parametric amplifier; Broadband tunable laser; Beam quality
3 MU M; REPETITION-RATE; LASER SOURCE; FIBER LASER; FEMTOSECOND; AMPLIFICATION; OSCILLATOR; OPCPA
英文摘要:
We have demonstrated efficient generation of high beam quality, high-energy and broadband tunable femtosecond mid-infrared pulses using a three-stage collinear optical parametric amplifier (OPA). The white-light continuum (WLC) seeded OPA setup, based on KTA crystal in three stages and pumped by a femtosecond laser pulse at 800 nm, is capable of producing idler wavelength ranging from 2.4 mu m to 4.0 mu m with energy up to 82 mu J at 3.27 mu m, which corresponds to signal energy of 350 mu J at 1060 nm. The output pulse has excellent intensity distribution with measured beam quality factor M-2 similar to 1.1 for signal and M-2 similar to 1.7 for idler. To our knowledge, this is the best beam quality reported in 3-5 Lim femtosecond OPA until now. The achieved mid-infrared pulse also has a good energy stability with a fluctuation of 1.01% rms over half an hour. (C) 2016 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1016/j.optcom.2015.12.001


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