Bifocal photon sieve imaging in the hard x-ray region.
Opt Lett
; 49(7): 1713-1716, 2024 Apr 01.
Article
en En
| MEDLINE
| ID: mdl-38560844
ABSTRACT
Hard x-rays are widely used for plasma diagnosis, nondestructive inspection, and high-resolution x-ray imaging. A typical x-ray source is a tabletop micro-focus x-ray source. Here, a bifocal photon sieve (PS) with the smallest diameter of 59.6 nm was designed and fabricated by electron-beam lithography to focus hard x-rays on variable-resolution array images. An imaging experiment at 8.39 keV demonstrates that the designed and fabricated PS has two different focal lengths. The numerous pinholes that can be optimized provide richer degrees of freedom to realize considerably more functionalities. A multi-focal PS provides the possibility of splitting x-rays and further extends interferometry from visible light to hard x-rays.
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MEDLINE
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En
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Opt Lett
Año:
2024
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Article