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Proceedings Paper

Achromatic x-ray focusing using diffractive and refractive elements
Author(s): Marion Umbach; Vladimir Nazmov; Markus Simon; Arndt Last; Volker Saile
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Paper Abstract

We develop a new type of X-ray lens system which is achromatic in a limited energy range. For such achromats we combine different types of refractive and diffractive elements. For example, Fresnel zone plates and planar parabolic concave SU-8 lenses are combined with lenses with a biconvex parabolic shape and with Fresnel lenses, respectively. We present numerical results from a theoretical study of such optical systems. We determine the focal spot size for an energy range of about E ± ΔE with ΔE/E ≈ 17%. Amongst other results we find that, compared with conventional lens systems, the spot size can be reduced by several tens of percent by using such achromatic lens systems.

Paper Details

Date Published: 27 September 2008
PDF: 7 pages
Proc. SPIE 7100, Optical Design and Engineering III, 71001U (27 September 2008); doi: 10.1117/12.797782
Show Author Affiliations
Marion Umbach, Forschungszentrum Karlsruhe (Germany)
Vladimir Nazmov, Forschungszentrum Karlsruhe (Germany)
Univ. Karlsruhe (Germany)
Markus Simon, Forschungszentrum Karlsruhe (Germany)
Arndt Last, Univ. Karlsruhe (Germany)
Volker Saile, Forschungszentrum Karlsruhe (Germany)
Univ. Karlsruhe (Germany)


Published in SPIE Proceedings Vol. 7100:
Optical Design and Engineering III
Laurent Mazuray; Rolf Wartmann; Andrew Wood; Jean-Luc Tissot; Jeffrey M. Raynor, Editor(s)

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