Dual wavelength digital holographic Laplacian reconstruction

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Title: Dual wavelength digital holographic Laplacian reconstruction
Authors: Ryle, James P.
Li, Dayan
Sheridan, John T.
Permanent link: http://hdl.handle.net/10197/3412
Date: 15-Sep-2010
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.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: Optical Society of America
Copyright (published version): 2010 Optical Society of America
Subject LCSH: Holography
Laplacian operator
Imaging systems
Image reconstruction
DOI: 10.1364/OL.35.003018
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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