Tilting refractive x-ray lenses for fine-tuning of their focal length.
Opt Express
; 31(5): 7617-7631, 2023 Feb 27.
Article
em En
| MEDLINE
| ID: mdl-36859890
ABSTRACT
In this work, we measure and model tilted x-ray refractive lenses to investigate their effects on an x-ray beam. The modelling is benchmarked against at-wavelength metrology obtained with x-ray speckle vector tracking experiments (XSVT) at the BM05 beamline at the ESRF-EBS light source, showing very good agreement. This validation permits us to explore possible applications of tilted x-ray lenses in optical design. We conclude that while tilting 2D lenses does not seem interesting from the point of view of aberration-free focusing, tilting 1D lenses around their focusing direction can be used for smoothly fine-tuning their focal length. We demonstrate experimentally this continuous change in the apparent lens radius of curvature R a reduction up to a factor of two and beyond is achieved and possible applications in beamline optical design are proposed.
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MEDLINE
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En
Ano de publicação:
2023
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Article