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Proceedings Paper

2D lens array for multi-contrast X-ray imaging
Author(s): Andrey A. Mikhaylov; Stefan Reich; Anton Plech; Margarita Zakharova; Vitor Vlnieska; Danays Kunka
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Paper Abstract

Inspired by the recently successfully demonstrated Shack-Hartmann sensors for hard X-rays, we present a twodimensional compound refractive lens array (CRLA) with parabolic shapes for multimodal X-ray imaging. The promising structure was produced by two-photon polymerization using state-of-the-art 3D-Printer, which allows the manufacturing of sub-micrometer structures. The 2D parabolic microlens array with 12x12 spots was characterized by scanning electron microscopy and X-ray imaging. For an X-ray energy of 8.5 keV the average focal spot size is around 8 μm at a focal distance of 38.2±0.5 cm with a visibility of 0.72. As an example of a potential application for quantitative optics characterization a diamond refractive lens was investigated by multi-contrast imaging resulting in a 0.4 μrad differential phase resolution.

Paper Details

Date Published: 26 April 2019
PDF: 8 pages
Proc. SPIE 11032, EUV and X-ray Optics: Synergy between Laboratory and Space VI, 1103208 (26 April 2019); doi: 10.1117/12.2520687
Show Author Affiliations
Andrey A. Mikhaylov, Karlsruher Institute of Technology (Germany)
Stefan Reich, Karlsruher Institute of Technology (Germany)
Anton Plech, Karlsruher Institute of Technology (Germany)
Margarita Zakharova, Karlsruher Institute of Technology (Germany)
Vitor Vlnieska, Karlsruher Institute of Technology (Germany)
Danays Kunka, Karlsruher Institute of Technology (Germany)

Published in SPIE Proceedings Vol. 11032:
EUV and X-ray Optics: Synergy between Laboratory and Space VI
René Hudec; Ladislav Pina, Editor(s)

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