Edge-enhancement fourier transform X-ray microscopy using a Laguerre-Gaussian zoneplate

Nándor Bokor*, Andrew Domondon, Yoshinori Iketaki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Efficient techniques to achieve isotropic edge enhancement in optics involve applying a radial Hilbert, Laguerre-Gaussian, or differentiating filter on the object spectrum. We demonstrate a simple setup for isotropic edge-enhancement in soft-X-ray microscopy, using a single Laguerre-Gaussian zone plate (LGZP). Since the LGZP acts as a beam-splitter, diffraction efficiency problems usually associated with X-ray microscopy optics are not present in this system. As numerically demonstrated, the setup can detect optical path differences as small as λ/50 with high contrast.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalOptical Review
Issue number2
Publication statusPublished - 2010 Mar 1
Externally publishedYes


  • Diffractive optical element
  • Edge-enhancement
  • Gradient
  • Hilbert
  • Laguerre-Gaussian
  • Microscopy
  • Phase-contrast
  • X-ray

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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