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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 16223–16228

Magnetic imaging by x-ray holography using extended references

Thomas A. Duckworth, Feodor Ogrin, Sarnjeet S. Dhesi, Sean Langridge, Amy Whiteside, Thomas Moore, Guillaume Beutier, and Gerrit van der Laan  »View Author Affiliations


Optics Express, Vol. 19, Issue 17, pp. 16223-16228 (2011)
http://dx.doi.org/10.1364/OE.19.016223


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Abstract

We demonstrate magnetic lensless imaging by Fourier transform holography using extended references. A narrow slit milled through an opaque gold mask is used as a holographic reference and magnetic contrast is obtained by x-ray magnetic circular dichroism. We present images of magnetic domains in a Co/Pt multilayer thin film with perpendicular magnetic anisotropy. This technique holds advantages over standard Fourier transform holography, where small holes are used to define the reference beam. An increased intensity through the extended reference reduces the counting time to record the farfield diffraction pattern. Additionally it was found that manufacturing narrow slits is less technologically demanding than the same procedure for holes. We achieve a spatial resolution of ∼30 nm, which was found to be limited by the sample period of the chosen experimental setup.

© 2011 OSA

OCIS Codes
(310.6870) Thin films : Thin films, other properties
(340.7440) X-ray optics : X-ray imaging
(090.1995) Holography : Digital holography
(260.6048) Physical optics : Soft x-rays

ToC Category:
X-ray Optics

History
Original Manuscript: June 7, 2011
Revised Manuscript: July 25, 2011
Manuscript Accepted: July 27, 2011
Published: August 9, 2011

Citation
Thomas A. Duckworth, Feodor Ogrin, Sarnjeet S. Dhesi, Sean Langridge, Amy Whiteside, Thomas Moore, Guillaume Beutier, and Gerrit van der Laan, "Magnetic imaging by x-ray holography using extended references," Opt. Express 19, 16223-16228 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-17-16223


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