Raman study of protonated H:LiNbO3 thin film waveguides

Savatinova, I; Savova, I; Tonchev, S; Liarokapis, E; Armenise, MN

dc.contributor.author	Savatinova, I	en
dc.contributor.author	Savova, I	en
dc.contributor.author	Tonchev, S	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Armenise, MN	en
dc.date.accessioned	2014-03-01T01:15:06Z
dc.date.available	2014-03-01T01:15:06Z
dc.date.issued	1999	en
dc.identifier.issn	0921-4526	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13348
dc.subject	LiNbO3	en
dc.subject	waveguides	en
dc.subject	Raman scattering	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Annealing	en
dc.subject.other	Cooling	en
dc.subject.other	Crystal lattices	en
dc.subject.other	Dielectric films	en
dc.subject.other	Ferroelectric devices	en
dc.subject.other	Hydrogen	en
dc.subject.other	Lithium niobate	en
dc.subject.other	Protons	en
dc.subject.other	Raman scattering	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	Refractive index	en
dc.subject.other	Thin film devices	en
dc.subject.other	Multimode proton exchanged waveguides	en
dc.subject.other	Thin film waveguides	en
dc.subject.other	Optical waveguides	en
dc.title	Raman study of protonated H:LiNbO3 thin film waveguides	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0921-4526(98)01293-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0921-4526(98)01293-9	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Multimode proton exchanged waveguides HxLi1-xNbO3 have been formed in congruent z-cut substrates using benzoic acid for proton source. The H concentration was changed by annealing, applying two different rates of cooling - quick (q) and slow (s). The samples were characterized by measuring their extraordinary refractive index profiles and waveguide Raman scattering. At high proton concentrations (x > 0.56), where the beta(i) phases are supposed to be existing the s- (equilibrium beta(2)/beta P-1 combination) and q- (metastable beta(1) phase) type of samples show very different Raman spectra, being also different from the scattering of the pure substrate. This is an evidence for lattice transformations probably related to the large differences in the electrooptic and nonlinear properties of the phases. (C) 1999 Elsevier Science B.V. All rights reserved.	en
heal.publisher	Elsevier Science Publishers B.V., Amsterdam, Netherlands	en
heal.journalName	Physica B: Condensed Matter	en
dc.identifier.doi	10.1016/S0921-4526(98)01293-9	en
dc.identifier.isi	ISI:000079362700225	en
dc.identifier.volume	263-264	en
dc.identifier.spage	819	en
dc.identifier.epage	821	en