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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 10 — Oct. 31, 2007

Soft-x-ray microscopy using spiral zone plates

Anne Sakdinawat and Yanwei Liu  »View Author Affiliations


Optics Letters, Vol. 32, Issue 18, pp. 2635-2637 (2007)
http://dx.doi.org/10.1364/OL.32.002635


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Abstract

Phase sensitive soft-x-ray microscopy methods enable the study of specimens for which phase effects are a prevalent contrast mechanism. One way to detect these phase effects is to optically implement the radial Hilbert transform by using spiral zone plates (SZPs), which results in the isotropic measurement of the amplitude and phase gradient in a sample. Soft-x-ray microscopy using an SZP as a single element objective lens was demonstrated through the imaging of a 1 μ m circular aperture at a wavelength of 2.73 nm ( 454 eV ) . A regular zone plate, a charge 1 SZP, and a charge 2 SZP were fabricated using electron beam lithography and were used as the imaging optic in the microscopy setup. The charge 1 and charge 2 SZP images exhibited isotropic edge enhancement as a result of radial Hilbert filtering.

© 2007 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.6110) Fourier optics and signal processing : Spatial filtering
(340.7460) X-ray optics : X-ray microscopy

ToC Category:
X-ray Optics

History
Original Manuscript: June 14, 2007
Manuscript Accepted: July 19, 2007
Published: September 4, 2007

Virtual Issues
Vol. 2, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Anne Sakdinawat and Yanwei Liu, "Soft-x-ray microscopy using spiral zone plates," Opt. Lett. 32, 2635-2637 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-32-18-2635

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