Vision-Based Alignment Control for Grating Tiling in Petawatt-Class Laser System

  title={Vision-Based Alignment Control for Grating Tiling in Petawatt-Class Laser System},
  author={Zaojun Fang and Lan Xia and Guodong Chen and Yanlong Huang and De Xu and Min Tan},
  journal={IEEE Transactions on Instrumentation and Measurement},
Large-sized diffraction gratings are required for the compressor of chirped-pulse-amplification systems. However, producing single large grating is of great difficulty, which makes grating tiling an alterative solution. This paper presents a vision-based alignment control method for grating tiling in petawatt-class laser system. Tiling errors with six degrees of freedom are grouped into three ones, and a decoupled vision control method is proposed. The piston error is measured from the far… CONTINUE READING
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