Chloride photo-thermo-refractive glasses

The known photo-thermo-refractive (PTR) glass is a photosensitive multi-component silicate glass containing fluorine and bromine and doped with cerium, antimony, and silver. The UV irradiation and subsequent heat treatment of this glass result in the crystalline phase precipitation and negative refr...

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Published inOptical materials express Vol. 6; no. 5; pp. 1701 - 1713
Main Authors Dubrovin, Victor D., Ignatiev, Alexander I., Nikonorov, Nikolay V.
Format Journal Article
LanguageEnglish
Published 01.05.2016
Subjects
Chlorides
Glass
Heat treatment
Irradiation
Nanoparticles
Recording
Refractive index
Refractivity
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Summary:The known photo-thermo-refractive (PTR) glass is a photosensitive multi-component silicate glass containing fluorine and bromine and doped with cerium, antimony, and silver. The UV irradiation and subsequent heat treatment of this glass result in the crystalline phase precipitation and negative refractive index change up to 1000 ppm in the UV-irradiated area. This effect is used for holographic recording the volume Bragg's gratings. In the present research, we developed and studied the new class of chlorine-containing PTR glasses in which the UV irradiation and subsequent heat treatment cause the precipitation of silver nanoparticles with a shell consisting of mixed silver and sodium chlorides. The growth of the shell on the silver nanoparticle was shown to lead to a local positive refractive index change in the UV-irradiated area against the unirradiated one up to 1500 ppm.
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ISSN:2159-3930
2159-3930
DOI:10.1364/OME.6.001701