Speckle orientation in paraxial optical systems

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dc.contributor.author Li, Dayan
dc.contributor.author Kelly, Damien P.
dc.contributor.author Kirner, Raoul
dc.contributor.author Sheridan, John T.
dc.date.accessioned 2012-11-08T17:11:33Z
dc.date.available 2012-11-08T17:11:33Z
dc.date.copyright 2012 Optical Society of America en
dc.date.issued 2012-02
dc.identifier.citation Applied Optics en
dc.identifier.uri http://hdl.handle.net/10197/3902
dc.description.abstract The statistical properties of speckles in paraxial optical systems depend on the system parameters. In particular, the speckle orientation and the lateral dependence (x and y) of the longitudinal speckle size can vary significantly. For example, the off-axis longitudinal correlation length remains equal to the on-axis size for speckles in a Fourier transform system, while it decreases dramatically as the observation position moves off axis in a Fresnel system. In this paper, we review the speckle correlation function in general linear canonical transform (LCT) systems, clearly demonstrating that speckle properties can be controlled by introducing different optical components, i.e., lenses and sections of free space. Using a series of numerical simulations, we examine how the correlation function changes for some typical LCT systems. The integrating effect of the camera pixel and the impact this has on the measured first- and second-order statistics of the speckle intensities is also examined theoretically. A series of experimental results are then presented to confirm several of these predictions. First, the effect the pixel size has on the measured first-order speckle statistics is demonstrated, and second, the orientation of speckles in a Fourier transform system is measured, showing that the speckles lie parallel to the optical axis. en
dc.language.iso en en
dc.publisher Optical Society of America en
dc.rights This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-4-A1. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. en
dc.subject Statistical optics en
dc.subject Diffraction en
dc.subject Speckle imaging en
dc.subject Wave propagation en
dc.subject.lcsh Speckle en
dc.subject.lcsh Diffraction en
dc.subject.lcsh Fourier transform optics en
dc.title Speckle orientation in paraxial optical systems en
dc.type Journal Article en
dc.internal.authorcontactother john.sheridan@ucd.ie
dc.internal.availability Full text available en
dc.status Peer reviewed en
dc.identifier.volume 51 en
dc.identifier.issue 4 en
dc.identifier.startpage A1 en
dc.identifier.endpage A10 en
dc.identifier.doi 10.1364/AO.51.0000A1
dc.neeo.contributor Li|Dayan|aut|
dc.neeo.contributor Kelly|Damien P.|aut|
dc.neeo.contributor Kirner|Raoul|aut|
dc.neeo.contributor Sheridan|John T.|aut|
dc.description.admin Author has checked copyright en
dc.description.admin DG 18/10/2012 en
dc.internal.rmsid 309049873
dc.date.updated 2012-10-17T15:09:10Z

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