Enhanced second order non-linear optical properties of silica sol-gel thin films through photo-induced polingAbbas, B. and Mitchell, G.R. (1998) Enhanced second order non-linear optical properties of silica sol-gel thin films through photo-induced poling. Journal of Sol-Gel Science and Technology, 13 (1-3). pp. 647-650. ISSN 1573-4846 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1023/A:1008672100872 Abstract/SummarySol-gel derived inorganic materials are of interest as hosts for non-linear optically active guest molecules and they offer particular advantages in the field of non-linear optics. Orientationally ordered glasses have been prepared using a sol-gel system based on tetramethoxysilane, methyltrimethoxysilane and a non-linear optical chromophore Disperse Red 1. The novel technique of photo-induced poling was used to generate enhanced levels of polar order. The level of enhancement is strongly dependent on the extent of gelation and an optimum preparation time of ∼100 h led to an enhancement factor of ∼5. Films prepared in this manner exhibited a high stability of the polar order.
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