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26 April 2019 2D lens array for multi-contrast X-ray imaging
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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.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrey A. Mikhaylov, Stefan Reich, Anton Plech, Margarita Zakharova, Vitor Vlnieska, and Danays Kunka "2D lens array for multi-contrast X-ray imaging", Proc. SPIE 11032, EUV and X-ray Optics: Synergy between Laboratory and Space VI, 1103208 (26 April 2019); https://doi.org/10.1117/12.2520687
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