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Propagation-based phase-contrast enhancement of nanostructure images using a debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source and an LiF crystal detector

Authors :
Pikuz, Tatiana A.
Faenov, Anatoly Ya.
Gasilov, Sergei V.
Skobelev, Igor Yu.
Fukuda, Yuji
Kando, Masaki
Kotaki, Hideyuki
Homma, Takayuki
Kawase, Keigo
Hayashi, Yukio
Kawachi, Tetsuya
Daido, Hiroyuki
Kato, Yoshiaki
Bulanov, Sergei V.
Source :
Applied Optics; November 2009, Vol. 48 Issue: 32 p6271-6276, 6p
Publication Year :
2009

Abstract

We demonstrate in-line phase-contrast imaging of nanothickness foils by using a relatively large, polychromatic, debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source, and a high-resolution, large dynamic range LiF crystal detector. The spatial coherence length of radiation in our setup reached a value of 5 μm on the sample plane, which is enough to observe phase-contrast enhancement in the images registered by the detector placed only a few hundred micrometers behind the object. We have developed a tabletop soft x-ray emission source, which emits radiation within a 4π sr solid angle, and which allows one to obtain contact and propagation-based phase-contrast imaging of nanostructures with 700 nm spatial resolutions. This advance could be of utility for metrology applications.

Details

Language :
English
ISSN :
1559128X and 21553165
Volume :
48
Issue :
32
Database :
Supplemental Index
Journal :
Applied Optics
Publication Type :
Periodical
Accession number :
ejs20904350