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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 18 — Sep. 15, 2010
  • pp: 3018–3020

Dual wavelength digital holographic Laplacian reconstruction

James P. Ryle, Dayan Li, and John T. Sheridan  »View Author Affiliations


Optics Letters, Vol. 35, Issue 18, pp. 3018-3020 (2010)
http://dx.doi.org/10.1364/OL.35.003018


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Abstract

Access to the spatial derivatives of an optical wave field can be used to enhance edge detection, focusing, and holographic imaging. It was recently shown that, by using digital holographic techniques, the Laplacian of an object field can be extracted. Here it is demonstrated that equivalent results can be found using two holograms captured at either two distances or with two appropriately related wavelengths. Experimental and numerical results confirming the theoretical analyses are presented. The proposed two-wavelength-based system requires no mechanical repositioning of the object and is shown to provide superior performance.

© 2010 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.1995) Holography : Digital holography
(110.4234) Imaging systems : Multispectral and hyperspectral imaging
(110.3010) Imaging systems : Image reconstruction techniques

ToC Category:
Imaging Systems

History
Original Manuscript: February 19, 2010
Revised Manuscript: May 19, 2010
Manuscript Accepted: June 4, 2010
Published: September 2, 2010

Citation
James P. Ryle, Dayan Li, and John T. Sheridan, "Dual wavelength digital holographic Laplacian reconstruction," Opt. Lett. 35, 3018-3020 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-18-3018

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