Two-pass full-tiled grating compressor with real-time monitoring and control for XG-III petawatt-class laser facility

A two-pass, full-tiled grating compressor with a unique feedback control system for precise alignment was realized in an XG-III petawatt-class laser facility, based on the chirped-pulse amplification (CPA) technique. Far-field images of both 0th order and −1st order diffraction light of a tiled grat...

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Bibliographic Details
Published inLaser physics Vol. 25; no. 1; pp. 15301 - 15306
Main Authors Li, Z L, Wang, X, Mu, J, Yan, W, Zhu, Q H, Su, J Q, Zhou, K N, Zhang, J W, Wu, Z H, Zhou, S, Zuo, Y L, Liu, H Z
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.01.2015
Subjects
compressor
CPA
grating tiling
petawatt-class laser
real-time
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Summary:A two-pass, full-tiled grating compressor with a unique feedback control system for precise alignment was realized in an XG-III petawatt-class laser facility, based on the chirped-pulse amplification (CPA) technique. Far-field images of both 0th order and −1st order diffraction light of a tiled grating assembly (TGA) were recorded using a CCD camera, by which the tiling errors of the TGA can be identified and corrected in real-time without disturbing the main beam. A final compressed pulse of 615 fs (FWHM) with a focal spot about 1.1 times the diffraction limited (DL) size was achieved.
ISSN:1054-660X
1555-6611
DOI:10.1088/1054-660X/25/1/015301