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Free Light-shape Focusing in Extreme-ultraviolet Radiation with Self-evolutionary Photon Sieves

Overview
Journal Sci Rep
Specialty Science
Date 2024 Jan 19
PMID 38243046
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Abstract

Extreme-ultraviolet (EUV) radiation is a promising tool, not only for probing microscopic activities but also for processing nanoscale structures and performing high-resolution imaging. In this study, we demonstrate an innovative method to generate free light-shape focusing with self-evolutionary photon sieves under a single-shot coherent EUV laser; this includes vortex focus shaping, array focusing, and structured-light shaping. The results demonstrate that self-evolutionary photon sieves, consisting of a large number of specific pinholes fabricated on a piece of SiN membrane, are capable of freely regulating an EUV light field, for which high-performance focusing elements are extremely lacking, let alone free light-shape focusing. Our proposed versatile photon sieves are a key breakthrough in focusing technology in the EUV region and pave the way for high-resolution soft X-ray microscopy, spectroscopy in materials science, shorter lithography, and attosecond metrology in next-generation synchrotron radiation and free-electron lasers.

Citing Articles

Vortex bifocusing of extreme ultraviolet using modified Fermat-spiral photon-sieve splitter.

Liu Y, Cui H, Shen Y, Zhao Y, Yang S, Wang G Nanophotonics. 2024; 13(23):4225-4230.

PMID: 39678114 PMC: 11636271. DOI: 10.1515/nanoph-2024-0389.

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