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Collection Of theses on high power laser and plasma physics, Volume. 10, Issue 1, 1704(2012)

Spatial degradation of pulse contrast in the focal plane for pulsed laser beams from chirped-pulse amplification system

Qingwei Yang1、*, Mingwei Liu2, Yanhai Wang3, Xinglong Xie1, Ailin Guo1, and Zunqi Lin1
Author Affiliations
  • 1National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, No. 390, Qinghe Road, Jiading District, Shanghai 201800, China
  • 2School of Physics, Hunan University of Science and Technology, Hunan 411201, China
  • 3College of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China
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    A two-dimension model is presented to analyze the spatial dependence of pulse contrast in the focal plane. The parameters of the SHENGUANG (SG) II laser system are demonstrated as examples. Comparing with the degradation in the beam centroid, the pulse contrast degrades more seriously in the transverse. This spatial degradation of pulse contrast can be improved, such as by controlling the spatial spectrum clipping.

    Keywords
    Beam focusingChirped pulse amplificationPulse contrast ratio
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    Qingwei Yang, Mingwei Liu, Yanhai Wang, Xinglong Xie, Ailin Guo, Zunqi Lin. Spatial degradation of pulse contrast in the focal plane for pulsed laser beams from chirped-pulse amplification system[J]. Collection Of theses on high power laser and plasma physics, 2012, 10(1): 1704

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    Received: Nov. 1, 2011

    Accepted: --

    Published Online: Jun. 2, 2017

    The Author Email: Yang Qingwei (yqwphy@siom.ac.cn)

    DOI:10.1016/j.ijleo.2012.04.018

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology