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Novel figuring method for a multilayer Laue lens
Optics Express
|December 23, 2022
Summary
A novel figuring method for multilayer Laue lenses (MLLs) significantly improves hard X-ray imaging. This technique enhances spatial resolution from 45nm to 26nm, approaching ideal MLL performance.
Area of Science:
- Optics and Photonics
- Materials Science
- X-ray Microscopy
Background:
- Multilayer Laue lenses (MLLs) are crucial for high-resolution X-ray imaging.
- Fabrication imperfections limit the performance of current MLLs.
- Advanced figuring techniques are needed to overcome these limitations.
Purpose of the Study:
- To introduce a new figuring method for hard X-ray MLLs.
- To theoretically evaluate the effectiveness of the proposed figuring method.
- To assess the impact of figuring on MLL performance metrics.
Main Methods:
- Theoretical simulation of a multilayer Laue lens at 20 keV.
- Application of a novel figuring technique to compensate for structure errors.
- Analysis of phase errors and spatial resolution before and after figuring.
Main Results:
- The figuring method effectively compensates for MLL structure errors.
- Phase errors of the first-order diffracted wave reduced from 0.85π to 0.26π.
- Spatial resolution improved from 45nm to 26nm, nearing the ideal MLL resolution of 24nm.
- Achieved 36% of the ideal MLL's first-order diffraction efficiency.
Conclusions:
- The proposed figuring method significantly enhances MLL performance in hard X-ray applications.
- This technique can potentially lower fabrication demands for MLLs.
- Enables the future development of MLLs with larger numerical apertures and longer working distances.
