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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 5, Iss. S1 — May. 31, 2007
  • pp: S25–S26

Piston phase alignment of tiled grating assemblies by use of temporal coherence of ultra-short pulse

Xuemei Ma and Jianqiang Zhu  »View Author Affiliations

Chinese Optics Letters, Vol. 5, Issue S1, pp. S25-S26 (2007)

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Multi-kilojoule petawatt lasers using chirped-pulse amplification need large-scale compression gratings. Tiled-grating approach has been adopted in several systems to meet the size requirements, grating tiles need to be precisely phased to ensure a transform-limited focal spot when focusing high-energy laser pulses in the target. Piston error of segmented gratings induced the focal spot to split when it arrived at multiple of the half wavelength. Alignment method using ultra-short pulse capable of controlling the absolute piston phase error within one half wavelength is proposed.

© 2007 Chinese Optics Letters

OCIS Codes
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(050.1950) Diffraction and gratings : Diffraction gratings
(320.0320) Ultrafast optics : Ultrafast optics

Xuemei Ma and Jianqiang Zhu, "Piston phase alignment of tiled grating assemblies by use of temporal coherence of ultra-short pulse," Chin. Opt. Lett. 5, S25-S26 (2007)

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