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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 20, Iss. 11 — Nov. 1, 2003
  • pp: 2172–2178

Transverse or axial superresolution in a 4Pi-confocal microscope by phase-only filters

Daniel M. de Juana, José E. Oti, Vidal F. Canales, and Manuel P. Cagigal  »View Author Affiliations

JOSA A, Vol. 20, Issue 11, pp. 2172-2178 (2003)

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A novel procedure to design axial and transverse superresolving pupil filters for the 4Pi-confocal microscope is presented. The method is based on the use of a series of figures of merit developed to describe the effect of inserting two identical filters in the two arms of the illumination path of the microscope. As a practical implementation, we have applied our method to obtain superresolving continuous phase-only filters. Different resolution-improving phase functions are shown for the transverse and the axial direction. These filters provided axial gain up to 1.3 and transverse gain up to 1.4 without an increase in sidelobes.

© 2003 Optical Society of America

OCIS Codes
(100.6640) Image processing : Superresolution
(110.1220) Imaging systems : Apertures
(170.1790) Medical optics and biotechnology : Confocal microscopy
(220.1230) Optical design and fabrication : Apodization
(350.5730) Other areas of optics : Resolution

Original Manuscript: February 17, 2003
Revised Manuscript: July 2, 2003
Manuscript Accepted: July 14, 2003
Published: November 1, 2003

Daniel M. de Juana, José E. Oti, Vidal F. Canales, and Manuel P. Cagigal, "Transverse or axial superresolution in a 4Pi-confocal microscope by phase-only filters," J. Opt. Soc. Am. A 20, 2172-2178 (2003)

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