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Bendable grating for monochromatization of extreme-ultraviolet light
Optics Express
|September 23, 2025
Summary
A novel active grating adjusts its curvature to select and focus extreme ultraviolet light, reducing optical elements. This low-cost system demonstrates good performance and efficiency for laboratory and large-scale applications.
Area of Science:
- Optics and Photonics
- Spectroscopy
- Mechanical Engineering
Background:
- Traditional plane gratings require additional optics for focusing spectral components.
- Monochromators often utilize plane gratings, increasing system complexity and size.
Purpose of the Study:
- To introduce a low-cost active grating capable of simultaneous spectral selection and focusing.
- To reduce the number of optical components in spectroscopic systems.
Main Methods:
- Development of a mechanically adjustable active grating.
- Optical characterization in the extreme ultraviolet (13-50 eV) region.
- Wavefront sensing to analyze the bent grating's shape.
Main Results:
- The active grating demonstrated good optical properties and high efficiency.
- Successful focusing of spectral components was achieved.
- The system's performance was validated in the 13-50 eV energy range.
Conclusions:
- The active grating offers a simplified and efficient solution for spectral selection and focusing.
- The technology is suitable for both table-top experiments and large-scale scientific facilities.
- This innovation can lead to more compact and cost-effective spectroscopic instruments.
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