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Evidence of microscopic-scale modifications in optical glasses supporting second harmonic generation

Evidence of microscopic-scale modifications in optical glasses supporting second harmonic generation
Evidence of microscopic-scale modifications in optical glasses supporting second harmonic generation
We explore the extent of changes in dynamic correlations of vitreous SiO2 induced by treatments required to enable frequency doubling of infrared light (poling) by means of inelastic neutron scattering. These appear as an excess of modes in certain regions of the frequency spectrum as well as a narrowing of the 100 meV peak. Such alterations are better ascribed to a change in ordering of the material than to the emergence of "defect" modes, absent in the native sample.
0375-9601
257-262
Cabrillo, C.
011502de-1453-46f1-85fd-4119841309d7
Cuello, G.J.
afebbf48-957d-402d-a825-4af6179cb171
García-Fernández, P.
fed72f56-d34c-4099-84dc-524d4379c915
Bermejo, F.J.
6e5c6400-6c1d-46d5-8433-bf29fd18e036
Pruneri, V.
0e97eb94-b682-409f-a107-ae6b84763f02
Samoggia, F.
fce8058c-01ef-4fa1-bfb6-c4fe54a4a7e5
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Cabrillo, C.
011502de-1453-46f1-85fd-4119841309d7
Cuello, G.J.
afebbf48-957d-402d-a825-4af6179cb171
García-Fernández, P.
fed72f56-d34c-4099-84dc-524d4379c915
Bermejo, F.J.
6e5c6400-6c1d-46d5-8433-bf29fd18e036
Pruneri, V.
0e97eb94-b682-409f-a107-ae6b84763f02
Samoggia, F.
fce8058c-01ef-4fa1-bfb6-c4fe54a4a7e5
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Cabrillo, C., Cuello, G.J., García-Fernández, P., Bermejo, F.J., Pruneri, V., Samoggia, F. and Kazansky, P.G. (1998) Evidence of microscopic-scale modifications in optical glasses supporting second harmonic generation. Physics Letters A, 248 (2-4), 257-262. (doi:10.1016/S0375-9601(98)00669-0).

Record type: Article

Abstract

We explore the extent of changes in dynamic correlations of vitreous SiO2 induced by treatments required to enable frequency doubling of infrared light (poling) by means of inelastic neutron scattering. These appear as an excess of modes in certain regions of the frequency spectrum as well as a narrowing of the 100 meV peak. Such alterations are better ascribed to a change in ordering of the material than to the emergence of "defect" modes, absent in the native sample.

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Published date: 9 November 1998

Identifiers

Local EPrints ID: 77838
URI: https://eprints.soton.ac.uk/id/eprint/77838
ISSN: 0375-9601
PURE UUID: 8d19a636-9740-4517-a7b3-0c1d442e24ef

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Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:13

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