Shack – Hartmann wavefront sensors based on 2D refractive lens arrays and super-resolution multi-contrast X-ray imaging

Different approaches of 2D lens arrays as Shack – Hartmann sensors for hard X-rays are compared. For the first time, a combination of Shack – Hartmann sensors for hard X-rays (SHSX) with a super-resolution imaging approach to perform multi-contrast imaging is demonstrated. A diamond lens is employed as a well known test object. The interleaving approach has great potential to overcome the 2D lens array limitation given by the two-photon polymerization lithography. Finally, the radiation damage induced by continuous exposure of an SHSX prototype with a white beam was studied showing a good performance of several hours. The shape modification and influence in the final image quality are presented.

Source: Journal of Synchrotron Radiation - April 21, 2020 Category: Physics Authors: Mikhaylov, A. Reich, S. Zakharova, M. Vlnieska, V. Laptev, R. Plech, A. Kunka, D. Tags: Shack – Hartmann sensor for hard X-rays sample-shift multi-contrast imaging interleaving measurement phase-contrast imaging polymer refractive lenses research papers Source Type: research