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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 23 — Dec. 1, 2004
  • pp: 2746–2748

Discrete continuous-phase superresolving filters

Sumei Zhou and Changhe Zhou  »View Author Affiliations


Optics Letters, Vol. 29, Issue 23, pp. 2746-2748 (2004)
http://dx.doi.org/10.1364/OL.29.002746


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Abstract

A new type of phase-only superresolving pupil filter with a discrete continuous-phase profile is presented that is a combination of discrete multilevel-phase modulation and continuous-phase modulation. This type of filter can achieve better superresolution performance than the continuous-phase filters reported in Opt. Lett. 28, 607 (2003). Therefore, with regard to the superresolution effect, this type of filter deserves study for practical applications. More importantly, the diffraction performance of this type of filter can explain the effect of a discrete-phase filter illuminated with a continuous wave front, whose superresolving performance cannot be analyzed with previous superresolution methods.

© 2004 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(100.6640) Image processing : Superresolution
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.5060) Instrumentation, measurement, and metrology : Phase modulation

Citation
Sumei Zhou and Changhe Zhou, "Discrete continuous-phase superresolving filters," Opt. Lett. 29, 2746-2748 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-23-2746

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