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Proceedings Paper

Method to realize real-time monitoring and control of a tiled-grating compressor for the XGIII laser facility
Author(s): Zhilin Li; Xiao Wang; Jie Mu; Qihua Zhu; Jingqin Su; Kainan Zhou; Junwei Zhang; Wei Yan; Zhaohui Wu; Yanlei Zuo; Hongzhong Liu
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Paper Abstract

In a high-energy chirped-pulse-amplified laser system, grating tiling technology provides an effective means to increase the aperture of the gratings and to scale the energy and irradiance of short-pulse lasers. The difficulties lie in controlling tiling errors accurately between the sub-gratings and keeping long time stability. In this paper, a two-pass full-tiled grating-compressor (TGC) with real- time control unit is developed for the first time. The far-field distributions of the 0th order and -1 st order diffracted beams of the two pairs of tiled gratings are monitored by the same CCD system, with the main laser chain being not disturbed. In this way, we realize online real-time control of tiling errors. Through a method of locking the far-field image to compensating the temporal drift, we can realize the automation of the assembly. The TGC has successfully applied in the multi-function XGIII laser facility, and focusing focal spot and output pulse width are obtained.

Paper Details

Date Published: 3 February 2015
PDF: 7 pages
Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 925516 (3 February 2015); doi: 10.1117/12.2064963
Show Author Affiliations
Zhilin Li, China Academy of Engineering Physics (China)
Xi'an Jiaotong Univ. (China)
Xiao Wang, China Academy of Engineering Physics (China)
Jie Mu, China Academy of Engineering Physics (China)
Qihua Zhu, China Academy of Engineering Physics (China)
Jingqin Su, China Academy of Engineering Physics (China)
Kainan Zhou, China Academy of Engineering Physics (China)
Junwei Zhang, China Academy of Engineering Physics (China)
Wei Yan, China Academy of Engineering Physics (China)
Zhaohui Wu, China Academy of Engineering Physics (China)
Yanlei Zuo, China Academy of Engineering Physics (China)
Hongzhong Liu, Xi'an Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 9255:
XX International Symposium on High-Power Laser Systems and Applications 2014
Chun Tang; Shu Chen; Xiaolin Tang, Editor(s)

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