Three-dimensional static speckle fields. Part II. Experimental investigation

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Title: Three-dimensional static speckle fields. Part II. Experimental investigation
Authors: Li, Dayan
Kelly, Damien P.
Sheridan, John T.
Permanent link: http://hdl.handle.net/10197/3298
Date: 1-Sep-2011
Abstract: In Part I [J. Opt. Soc. Am. A 28, 1896 (2011) of this paper, the physical model for fully developed speckle is examined based on two critical assumptions. (i) It is assumed that in the object plane, the speckle field is delta correlated, and (ii) it is assumed that the speckle field in the observation plane can be described as a Gaussian random process. A satisfactory simulation technique, based on the assumption that spatial averaging can be used to replace ensemble averaging, is also presented. In this part a detailed experimental investigation of the three dimensional speckle properties is performed using spatial averaging. The results provide solid verification for the predictions presented in Part I. The results are not only of theoretical interest but have practical implications. Techniques for locating and aligning the optical system axis with the camera center, and for measuring out-of plane displacement, are demonstrated.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: Optical Society of America
Copyright (published version): 2011 Optical Society of America
Subject LCSH: Speckle
Diffraction
Fourier transform optics
DOI: 10.1364/JOSAA.28.001904
Language: en
Status of Item: Peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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