Compression grating alignment by far-field monitoring
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Slight non-parallelism of the gratings in the compressor of a chirped-pulse amplification laser system produces angular chirp which results in a significant reduction of the focused intensity due to elongation of the pulse duration and enlargement of the focal spot. The effect of three-dimensional relative misalignment angles between two gratings on the far-field pattern of the pulses propagating through them is investigated by ray tracing. The far-field pattern provides two-dimensional information of the uncompensated angular dispersion directly. A simple and intuitive alignment procedure to achieve parallelism of the compression gratings by far-field monitoring is demonstrated experimentally, while the alignment precision is found to be the same as the methods proposed previously.
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- 12.K. Osvay, A.P. Kovacs, Z. Heiner, G. Kurdi, J. Klebniczki, M. Csatari, Sel. Areas Commun. 10, 213 (2004) Google Scholar
- 16.J.L. Collier, C. Hernandez-Gomez, S.J. Hawkes, J. Smith, T.B. Winstone, C.N. Danson, R.J. Clarke, D. Neely, C. Ziener, T. Strange, A.J. Frackiewicz, CLF Annu. Rep. 2002–2003, p. 168 Google Scholar