Diffractive focusing of hard x rays generated by femtosecond laser-driven plasma

Gabrielle Thériault; Réal Tremblay; Nathalie McCarthy

doi:10.1117/1.3381181

1 April 2010 Diffractive focusing of hard x rays generated by femtosecond laser-driven plasma

Gabrielle Thériault, Réal Tremblay, Nathalie McCarthy

Author Affiliations +

Optical Engineering, Vol. 49, Issue 4, 046501 (April 2010). https://doi.org/10.1117/1.3381181

Abstract

Current focusing systems for hard x rays produced by laser-based sources provide focal spots of the order of 30 µm or larger. We propose a diffractive system that can improve this resolution. This system consists of a hollow cylinder perforated in a metal sheet, with the aperture size and length dependent on the desired focusing properties. Various configurations of this diffractive lens are analyzed and compared using numerical algorithms for beam propagation. Nanometric transverse resolutions (FWHM=550λ, which corresponds to 39 nm at λ=0.071 nm) and intensity gains larger than 14 are predicted for a configuration with a working distance of 1 mm on each side of the lens.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Gabrielle Thériault, Réal Tremblay, and Nathalie McCarthy "Diffractive focusing of hard x rays generated by femtosecond laser-driven plasma," Optical Engineering 49(4), 046501 (1 April 2010). https://doi.org/10.1117/1.3381181

Published: 1 April 2010

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