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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 25 — Sep. 1, 2010
  • pp: 4677–4686

Development of microperiodic mirrors for hard x-ray phase-contrast imaging

Dan Stutman, Michael Finkenthal, and Nicolae Moldovan  »View Author Affiliations


Applied Optics, Vol. 49, Issue 25, pp. 4677-4686 (2010)
http://dx.doi.org/10.1364/AO.49.004677


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Abstract

Differential phase-contrast imaging with hard x rays can have important applications in medicine, material sciences, and energy research. Phase-contrast methods based on microperiodic optics, such as shearing interferometry, are particularly attractive because they allow the use of conventional x-ray tubes. To enable shearing interferometry with x rays up to 100 keV , we propose using grazing- incidence microperiodic mirrors. In addition, a simple lithographic method is proposed for the production of the microperiodic x-ray mirrors, based on the difference in grazing-incidence reflectivity between a low-Z substrate and a high-Z film. Using this method, we produced prototype mirrors with 5 100 μm periods and 90 mm active length. Experimental tests with x rays up to 60 keV indicate good microperiodic mirror reflectivity and high-contrast fringe patterns, encouraging further development of the proposed imaging concept.

© 2010 Optical Society of America

OCIS Codes
(340.0340) X-ray optics : X-ray optics
(340.7440) X-ray optics : X-ray imaging

ToC Category:
X-ray Optics

History
Original Manuscript: May 27, 2010
Revised Manuscript: July 21, 2010
Manuscript Accepted: July 28, 2010
Published: August 24, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Citation
Dan Stutman, Michael Finkenthal, and Nicolae Moldovan, "Development of microperiodic mirrors for hard x-ray phase-contrast imaging," Appl. Opt. 49, 4677-4686 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-25-4677

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