Tilting refractive x-ray lenses for fine-tuning their focal length

TL;DR

This paper investigates tilted x-ray refractive lenses, modeling their effects on x-ray beams and demonstrating their potential for fine-tuning focal lengths in optical systems, validated through precise at-wavelength measurements.

Contribution

It introduces a model for tilted x-ray lenses validated by experimental measurements, enabling fine-tuning of focal lengths for improved optical design.

Findings

Model accurately predicts effects of lens tilting on x-ray beams

Tilting lenses allows precise focal length adjustments

Validated model enhances optical system design capabilities

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 demonstrate that tilting 1D lenses around their focusing direction can be used for fine-tuning their focal length with possible applications in beamline optical design.