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Applied Optics

Applied Optics


  • Vol. 43, Iss. 34 — Dec. 1, 2004
  • pp: 6242–6247

Comparison of superresolution effects with annular phase and amplitude filters

Hongxin Luo and Changhe Zhou  »View Author Affiliations

Applied Optics, Vol. 43, Issue 34, pp. 6242-6247 (2004)

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The characteristics of annular amplitude and phase filters are compared. The behavior of two-zone phase and amplitude filters as the inner zone is increased is studied in detail. Numerical simulations show that a phase filter can achieve a superresolution effect, a circular Dammann effect, and flat-topped intensity for different applications, whereas a two-zone amplitude filter can generate only a superresolution effect. The experimental results show that both amplitude and phase filters can achieve superresolution. Generally, a phase superresolution filter is recommended for its higher efficiency and its special diffraction patterns that are impossible to achieve with an amplitude filter.

© 2004 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(100.5090) Image processing : Phase-only filters
(120.2440) Instrumentation, measurement, and metrology : Filters

Original Manuscript: April 6, 2004
Revised Manuscript: September 12, 2004
Published: December 1, 2004

Hongxin Luo and Changhe Zhou, "Comparison of superresolution effects with annular phase and amplitude filters," Appl. Opt. 43, 6242-6247 (2004)

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