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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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Diamond X-ray lens cubes with integrated aberration compensation.

Wenxin Wang, Ralph Döhrmann, Stephan Botta

|June 14, 2025

Summary

Researchers developed aberration-compensated diamond X-ray lens cubes for advanced nanoimaging. This innovation enhances focusing capabilities for high-brightness synchrotron radiation sources and X-ray free-electron lasers (XFELs).

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Last Updated: Jun 16, 2025

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Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Published on: April 23, 2021

Area of Science:

Materials Science
Optics
Physics

Background:

Diamond is ideal for radiation-resistant X-ray optics, especially for advanced synchrotron and X-ray free-electron laser (XFEL) facilities.
Current laser ablation methods for diamond lenses introduce aberrations, limiting nanoimaging resolution.
High-resolution imaging demands improved focusing optics with spatial resolution, bandwidth flexibility, and compact integration.

Purpose of the Study:

To introduce an innovative concept for aberration-compensated X-ray lens cubes.
To address limitations in current diamond lens fabrication for high-resolution X-ray applications.
To enhance focusing capabilities for 4th-generation synchrotron radiation and XFEL facilities.

Main Methods:

Fabrication of bi-concave, two-dimensional diamond lens plates with a 25 µm radius of curvature using femtosecond laser ablation.
Development of aberration-compensated lens cubes.
Utilizing multiple corrective phase plates to reduce wavefront errors.

Main Results:

Achieved a focal spot size of 52 nm × 51 nm at 14 keV.
Significantly reduced wavefront errors across a broad photon energy range (14 keV to 20 keV).
Demonstrated the effectiveness of aberration compensation in diamond X-ray optics.

Conclusions:

The developed aberration-compensated diamond X-ray lens cubes show strong potential for nanoimaging applications.
This approach advances high-resolution X-ray focusing for next-generation light sources.
The findings pave the way for improved imaging capabilities at synchrotron radiation facilities and XFELs.