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  4. Hard X-ray wavefront correction via refractive phase plates made by additive and subtractive fabrication techniques
 
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2020
Journal Article
Titel

Hard X-ray wavefront correction via refractive phase plates made by additive and subtractive fabrication techniques

Abstract
Modern subtractive and additive manufacturing techniques present new avenues for X-ray optics with complex shapes and patterns. Refractive phase plates acting as glasses for X-ray optics have been fabricated, and spherical aberration in refractive X-ray lenses made from beryllium has been successfully corrected. A diamond phase plate made by femtosecond laser ablation was found to improve the Strehl ratio of a lens stack with a numerical aperture (NA) of 0.88 × 10−3 at 8.2 keV from 0.1 to 0.7. A polymer phase plate made by additive printing achieved an increase in the Strehl ratio of a lens stack at 35 keV with NA of 0.18 × 10−3 from 0.15 to 0.89, demonstrating diffraction-limited nanofocusing at high X-ray energies.
Author(s)
Seiboth, F.
Brückner, D.
Kahnt, M.
Lyubomirskiy, M.
Wittwer, F.
Dzhigaev, D.
Ullsperger, T.
Nolte, S.
Koch, F.
David, C.
Garrevoet, J.
Falkenberg, G.
Schroer, C.G.
Zeitschrift
Journal of synchrotron radiation
Thumbnail Image
DOI
10.1107/S1600577520007900
Externer Link
Externer Link
Language
English
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Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Tags
  • aberration correction...

  • phase plate

  • ptychography

  • diffractive-refractiv...

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