Characteristics of DuPont photopolymers for slanted holographic grating formations

Wu, S-D; Glytsis, EN

dc.contributor.author	Wu, S-D	en
dc.contributor.author	Glytsis, EN	en
dc.date.accessioned	2014-03-01T01:53:39Z
dc.date.available	2014-03-01T01:53:39Z
dc.date.issued	2004	en
dc.identifier.issn	07403224	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27090
dc.subject.other	Angle measurement	en
dc.subject.other	Diffraction gratings	en
dc.subject.other	Diffusion	en
dc.subject.other	Holographic optical elements	en
dc.subject.other	Holography	en
dc.subject.other	Light modulation	en
dc.subject.other	Light transmission	en
dc.subject.other	Mathematical models	en
dc.subject.other	Optimization	en
dc.subject.other	Polyethylene terephthalates	en
dc.subject.other	Refractive index	en
dc.subject.other	Shrinkage	en
dc.subject.other	Anagular selectivity measurement	en
dc.subject.other	Coupled wave analysis	en
dc.subject.other	Holographic grating formations	en
dc.subject.other	Photopolymers	en
dc.subject.other	Real time diffraction	en
dc.subject.other	Refractive index modulation	en
dc.subject.other	Optical films	en
dc.title	Characteristics of DuPont photopolymers for slanted holographic grating formations	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/JOSAB.21.001722	en
heal.identifier.secondary	http://dx.doi.org/10.1364/JOSAB.21.001722	en
heal.publicationDate	2004	en
heal.abstract	The characteristic parameters of DuPont OmniDex613 photopolymers including the shrinkage factor, diffusion coefficient, and nonlocal response length are studied for slanted holographic gratings recorded at the UV wavelength of 363.8 nm by application of the rigorous coupled-wave analysis in conjunction with an angular-selectivity measurement, a real-time diffraction-monitoring technique, and a nonlocal diffusion model. Both small (<20 deg) and large (>40 deg) slant-angle gratings are presented. Depending on the exposure intensity, the recording shrinkage factor of the photopolymer varies from ∼2.75% to ∼4.20%. Furthermore, the effects of postbaking conditions on the refractive-index modulations and the shifts of Bragg angles for slanted holographic gratings are also investigated systematically. It is found that the postbaking processing can not only increase the refractive-index modulations from Δn1 ∼ 0.013 to ∼0.028 for a small slant-angle grating and from Δn1 ∼ 0.011 to ∼0.022 for a large slant-angle grating, but can also compensate the recording shrinkage. © 2004 Optical Society of America.	en
heal.journalName	Journal of the Optical Society of America B: Optical Physics	en
dc.identifier.doi	10.1364/JOSAB.21.001722	en
dc.identifier.volume	21	en
dc.identifier.issue	10	en
dc.identifier.spage	1722	en
dc.identifier.epage	1731	en