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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 5 — Mar. 1, 2012
  • pp: 903–905

Limitations of superoscillation filters in microscopy applications

Heikki J. Hyvärinen, Shakil Rehman, Jani Tervo, Jari Turunen, and Colin J. R. Sheppard  »View Author Affiliations

Optics Letters, Vol. 37, Issue 5, pp. 903-905 (2012)

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The idea of superresolving pupil filters comes from the concept of superoscillations that may occur in regions of a band-limited signal with small amplitude having oscillations faster than the fastest Fourier component of the signal. In optical microscopy, superresolution can be achieved by appropriate design of pupil functions where the angular aperture determines the ultimate focal spot smaller than the Abbe diffraction limit outside the evanescent field region. The angular aperture cannot be increased indefinitely and the huge sidelobes cannot be avoided that are present in superresolving filters. The limitations of using such kind of filters in microscopy applications are discussed through computational examples.

© 2012 Optical Society of America

OCIS Codes
(100.6640) Image processing : Superresolution
(110.0180) Imaging systems : Microscopy
(120.2440) Instrumentation, measurement, and metrology : Filters

ToC Category:
Image Processing

Original Manuscript: November 3, 2011
Revised Manuscript: January 1, 2012
Manuscript Accepted: January 3, 2012
Published: February 24, 2012

Virtual Issues
Vol. 7, Iss. 5 Virtual Journal for Biomedical Optics

Heikki J. Hyvärinen, Shakil Rehman, Jani Tervo, Jari Turunen, and Colin J. R. Sheppard, "Limitations of superoscillation filters in microscopy applications," Opt. Lett. 37, 903-905 (2012)

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