Real-time monitoring and control of large-aperture tiled-grating compressor in XG-Ⅲ laser facility
In high power laser systems based on chirped-pulse amplification (CPA) technique, grating tiling technique can multiply the grating area, allowing laser pulse with more energy to be compressed.In this paper, a unique feedback control system to precisely align the two-pass full-tiled grating compressor (TGC) has been realized in the XG-Ⅲ PW-class laser facility.Far-field images of both 0th order and-1st order diffraction light of the tiled grating assembly (TGA) are recorded using one CCD camera, by which the tiling errors of the TGA can be identified and corrected via control system in real-time without disturbing the main beam.A final compressed pulse of 615fs (FWHM) with a focal spot about 1.1 times of the diffraction limited (XDL) size is achieved.
Grating Tiling Diffraction Gratings Ultrafaset Optics Pulse Compressor
Zhilin li Xiao Wang Jie Mu Qihua Zhu Jingqin Su Kainan Zhou Wei Yan Junwei Zhang Hongzhong Liu
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, Chi Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, Chi State Key Laboratory for Manufacturing Systems Engineering, Xian Jiaotong University, Xian, Shaanx
国际会议
昆明
英文
233-239
2014-05-01（万方平台首次上网日期，不代表论文的发表时间）