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Applied Optics

Applied Optics


  • Vol. 37, Iss. 35 — Dec. 10, 1998
  • pp: 8206–8214

Asymmetric apodization in confocal scanning systems

Marek Kowalczyk, Carlos Javier Zapata-Rodríguez, and Manuel Martínez-Corral  »View Author Affiliations

Applied Optics, Vol. 37, Issue 35, pp. 8206-8214 (1998)

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A new class of superresolution pairs of pupil filters for three-dimensional, two-pupil confocal imaging is proposed. A distinctive feature of these filters is the asymmetry of their impulse response. For synthesizing the amplitude transmittance of such filters the Fourier transform properties of Hermitian functions are employed. It is shown that, with simple phase-only filters that belong to the class in question, either axial or unidirectional lateral superresolution is achieved.

© 1998 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(180.1790) Microscopy : Confocal microscopy
(220.1230) Optical design and fabrication : Apodization

Original Manuscript: March 16, 1998
Published: December 10, 1998

Marek Kowalczyk, Carlos Javier Zapata-Rodríguez, and Manuel Martínez-Corral, "Asymmetric apodization in confocal scanning systems," Appl. Opt. 37, 8206-8214 (1998)

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  1. L. Cheng, G. G. Siu, “Asymmetric apodization,” Maes. Sci. Technol. 2, 198–202 (1991). [CrossRef]
  2. G. G. Siu, L. Cheng, D. S. Chiu, K. S. Chang, “Improved side-lobe suppression in asymmetric apodization,” J. Phys. D: Appl. Phys. 27, 459–463 (1994).
  3. R. Bracewell, The Fourier Transform and Its Applications (McGraw-Hill, New York, 1965).
  4. T. Wilson, “Confocal microscopy,” in Confocal Microscopy, T. Wilson, ed. (Academic, London, 1990), pp. 1–64. [CrossRef]
  5. T. Wilson, C. Sheppard, Theory and Practice of Confocal Scanning Microscopy (Academic, London, 1984).
  6. Z. Hegedus, “Pupil filters in confocal imaging,” in Confocal Microscopy, T. Wilson, ed. (Academic, London, 1990), pp. 171–183.
  7. T. Wilson, “Optical aspects of confocal microscopy,” in Confocal Microscopy, T. Wilson, ed. (Academic, London, 1990), pp. 93–141.
  8. A. Barna, “Fraunhofer diffraction by semicircular apertures,” J. Opt. Soc. Am. 67, 122–123 (1977). [CrossRef]
  9. M. Gu, Principles of Three-Dimensional Imaging in Confocal Microscopes (World Scientific, Singapore, 1996).
  10. M. Martínez-Corral, P. Andrés, J. Ojeda-Castañeda, G. Saavedra, “Tunable axial resolution by annular binary filters. Application to confocal microscopy,” Opt. Commun. 119, 491–498 (1995). [CrossRef]
  11. C. J. R. Sheppard, “Leaky annular pupils for improved axial imaging,” Optik (Stuttgart) 99, 32–34 (1995).
  12. A. Magiera, “Transversal and axial gains in the confocal scanning microscope of leaky annular pupils,” Opt. Appl. 26, 57–60 (1996).
  13. M. Martínez-Corral, P. Andrés, J. Ojeda-Castañeda, “On-axis diffractional behavior of two-dimensional pupils,” Appl. Opt. 33, 2223–2229 (1994). [CrossRef] [PubMed]
  14. C. J. R. Sheppard, C. J. Cogswell, “Three-dimensional imaging in confocal microscopy,” in Confocal Microscopy, T. Wilson, ed. (Academic, London, 1990), pp. 143–169.
  15. T. Wilson, “Optical sectioning in confocal fluorescent microscopes,” J. Microsc. 154, 143–156 (1988). [CrossRef]
  16. J. P. Mills, B. J. Thompson, “Effect of aberrations and apodization on the performance of coherent optical systems I. The amplitude impulse response,” J. Opt. Soc. Am. A 3, 694–703 (1986). [CrossRef]
  17. H. Osterberg, L. W. Smith, “Defocusing images to increase resolution,” Science 134, 1193–1196 (1961). [CrossRef] [PubMed]
  18. T. R. M. Sales, G. M. Morris, “Diffractive superresolution elements,” J. Opt. Soc. Am. A 14, 1637–1646(1997). [CrossRef]

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