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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
- 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