Abstract

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

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References

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  2. J. Bunkenburg, T. J. Kessler, H. Hu, C. Kellogg, and C. Kelly, in Proceedings of CLEO 2003 MD1-6 (2003).
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2004 (1)

Opt. Lett. (1)

Other (4)

T. J. Kessler, J. Bunkenburg, and H. Huang, US Patent Application (filed May 2003).

J. Bunkenburg, T. J. Kessler, H. Hu, C. Kellogg, and C. Kelly, in Proceedings of CLEO 2003 MD1-6 (2003).

M. Born and E. Wolf, Interference and Diffraction of Light (5th edn.) (Pergamon Press, Oxford, 1975).

M. Born and E. Wolf, Principles of Optics (7th edn.) (Cambridge University Press, Cambridge, 1999).

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