Improvement of the spatial frequency response of photopolymer materials by modifying polymer chain length

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Show simple item record Gleeson, M. R. Sabol, Dušan Liu, Shui Close, Ciara E. Kelly, John V. Sheridan, John T. 2011-11-29T17:00:54Z 2011-11-29T17:00:54Z 2008 Optical Society of America en 2008-03-01
dc.identifier.citation Journal of the Optical Society of America B en
dc.identifier.issn 0740-3224
dc.identifier.issn 1520-8540
dc.description.abstract One of the key predictions of the nonlocal photopolymerization driven diffusion (NPDD) model is that a reduction in the extent of the nonlocal effects within a material will improve the high spatial frequency response. The NPDD model is generalized to more accurately model material absorbtivity. By eliminating the necessity for the steady-state approximation to describe the rate of change of monomer radical concentration, a more accurate physical representation of the initial transient behavior, at the start of grating growth, is achieved, which includes the effects of oxygen-based inhibition. The spatial frequency response of an acrylamide/polyvinylalcohol-based photopolymer is then improved through the addition of a chain transfer agent (CTA), sodium formate. Using the NPDD model demonstrates that the CTA has the effect of decreasing the average length of the polyacrylamide (PA) chains formed, thus reducing the nonlocal response parameter, σ. Further independent confirmation of the resulting reduction in the PA average molecular weight is provided using a diffusion-based holographic technique en
dc.description.sponsorship Science Foundation Ireland en
dc.description.sponsorship Irish Research Council for Science, Engineering and Technology en
dc.format.extent 177972 bytes
dc.format.extent 1072 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.language.iso en en
dc.publisher Optical Society of America en
dc.rights This paper was published in Journal of the Optical Society of America B 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: 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.lcsh Photopolymerization en
dc.subject.lcsh Holographic storage devices (Computer science) en
dc.subject.lcsh Holography en
dc.subject.lcsh Polymers en
dc.title Improvement of the spatial frequency response of photopolymer materials by modifying polymer chain length en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Not peer reviewed en
dc.identifier.volume 25 en
dc.identifier.issue 3 en
dc.identifier.startpage 396 en
dc.identifier.endpage 406 en
dc.identifier.doi 10.1364/JOSAB.25.000396
dc.neeo.contributor Gleeson|M. R.|aut| en
dc.neeo.contributor Sabol|Dušan|aut| en
dc.neeo.contributor Liu|Shui|aut| en
dc.neeo.contributor Close|Ciara E.|aut| en
dc.neeo.contributor Kelly|John V.|aut| en
dc.neeo.contributor Sheridan|John T.|aut| en
dc.description.othersponsorship SPIE Educational Scholarship en
dc.description.othersponsorship Enterprise Ireland en
dc.description.admin pu, pe, la, sp, ke, ab, is, en - kpw16/11/11 en

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