Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Design of online damage images detection system for large-aperture mirrors of high power laser facility based on wavefront coding technology

  • Fang, Wang (College of Electronics and Information Engineering, Sichuan University) ;
  • Qinxiao, Liu (School of Artificial Intelligence, Chongqing University of Technology) ;
  • Dongxia, Hu (Research Center of Laser Fusion, China Academy of Engineering Physics) ;
  • Hongjie, Liu (Research Center of Laser Fusion, China Academy of Engineering Physics) ;
  • Tianran, Zheng (Research Center of Laser Fusion, China Academy of Engineering Physics)
  • Received : 2019.09.22
  • Accepted : 2021.03.15
  • Published : 2021.09.25
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Abstract

The laser transport system of the high power laser facility is mainly composed of large-aperture laser transport mirrors (TMs). Obtaining the high-resolution online damage images during the operation, which is of great significance for operating safely of the mirrors and the facility. Based on wavefront coding, pan-tilt scanning and image stitching technologies, an online laser-damage images detection system is designed, and it can achieve high-precision detection of surface characteristics of large-aperture laser transport mirrors. The preliminary simulation proves that the system can solve the depth of field matching problem caused by pan-tilt tilt imaging and achieve higher resolution.

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References

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