外文题目: Astigmatism transfer phenomena in the optical parametric amplification process
作者: Li, Wenkai; Chen, Yun; Li, Yanyan; Xu, Yi; Guo, Xiaoyang; Lu, Jun; Leng, Yuxin
刊名: Appl. Phys. B-Lasers Opt.
年: 2017 卷: 123 期: 1 文章编号：37
英文关键词:

HARMONIC-GENERATION; FEMTOSECOND PULSES; BEAM QUALITY; PREAMPLIFIER; CRYSTALS; CONTRAST; SYSTEM
英文摘要:
We numerically and experimentally investigate the astigmatism transfer phenomena in femtosecond optical parametric amplification (OPA). We model the OPA process based on the coupled second-order three-wave nonlinear propagation equations. The numerical and experimental results support that the input pump pulse astigmatism can be transferred into the idler pulse but not the signal pulse, and the idler pulse astigmatism originating from spatial walk-off is less than the idler pulse astigmatism received from the pump. Thus, we can provide a clear understanding of astigmatism transfer mechanisms in the OPA process, and make better use of broadband tunable OPA sources.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1007/s00340-016-6621-7


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