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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 21 — Nov. 1, 2006
  • pp: 3194–3196

Crystal optics as guard apertures for coherent x-ray diffraction imaging

Xianghui Xiao, Martin D. de Jonge, Yuncheng Zhong, Yong S. Chu, and Qun Shen  »View Author Affiliations


Optics Letters, Vol. 31, Issue 21, pp. 3194-3196 (2006)
http://dx.doi.org/10.1364/OL.31.003194


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Abstract

A crucial issue in coherent x-ray diffraction imaging experiments is how to increase the signal-to-noise ratio when measuring relatively weak diffraction intensities from a nonperiodic object. A novel crystal guard aperture is described that makes use of a pair of multiple-bounce crystal optics to eliminate unwanted parasitic scattering background. This background is often produced by upstream optical elements such as a coherent-beam defining aperture. Recent experimental observation and theoretical analysis confirm the effectiveness of the crystal guard aperture method with coherence-preserved wave propagation through the crystal guard aperture and dramatically reduced scattering background in coherent x-ray diffraction images.

© 2006 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(050.1940) Diffraction and gratings : Diffraction
(180.7460) Microscopy : X-ray microscopy
(340.6720) X-ray optics : Synchrotron radiation
(340.7440) X-ray optics : X-ray imaging
(340.7460) X-ray optics : X-ray microscopy

ToC Category:
X-ray Optics

History
Original Manuscript: June 27, 2006
Revised Manuscript: August 27, 2006
Manuscript Accepted: August 30, 2006
Published: October 11, 2006

Virtual Issues
Vol. 1, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Xianghui Xiao, Martin D. de Jonge, Yuncheng Zhong, Yong S. Chu, and Qun Shen, "Crystal optics as guard apertures for coherent x-ray diffraction imaging," Opt. Lett. 31, 3194-3196 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-21-3194


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