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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 22 — Aug. 1, 2008
  • pp: E68–E75

Hybrid refractive–diffractive–gradient-index superresolving focusing device

José Manuel Rivas-Moscoso, Carlos R. Fernández-Pousa, and Carlos Gómez-Reino  »View Author Affiliations

Applied Optics, Vol. 47, Issue 22, pp. E68-E75 (2008)

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The focusing properties and resolving power of a device consisting of a tapered gradient-index (GRIN) lens with spherical input and output faces are investigated through the use of the ABCD formalism to achieve minimization of the Airy radius for the device. Diffractive elements, such as zone plates, can, with an appropriate choice of their parameters, increase the resolution of an imaging system compared with a conventional lens. We demonstrate that by combining both elements a hybrid refractive–diffractive–GRIN device can be designed that exhibits improved superresolution characteristics.

© 2008 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.2590) Fourier optics and signal processing : ABCD transforms
(080.2730) Geometric optics : Matrix methods in paraxial optics
(110.2760) Imaging systems : Gradient-index lenses

ToC Category:
Optical Design and Optical Synthesis

Original Manuscript: January 23, 2008
Manuscript Accepted: April 8, 2008
Published: May 22, 2008

José Manuel Rivas-Moscoso, Carlos R. Fernández-Pousa, and Carlos Gómez-Reino, "Hybrid refractive-diffractive-gradient-index superresolving focusing device," Appl. Opt. 47, E68-E75 (2008)

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