✦ LIBER ✦

Organically modified inorganic sol-gel materials for second-order nonlinear optics

✍ Scribed by Rong-Ho Lee; Ging-Ho Hsiue; Ru-Jong Jeng

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 200 KB
Volume: 79
Category: Article
ISSN: 0021-8995
DOI: 10.1002/1097-4628(20010307)79:10<1852::aid-app140>3.0.co;2-v

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✦ Synopsis

A series of the organically modified inorganic NLO sol-gel materials based on the prepolymer of alkoxysilanes and an alkoxysilane dye (ASD) have been investigated. Optically clear samples exhibit large second-order optical nonlinearity (d 33 ϭ ϳ10.8 -54.0 pm/V at 1064 nm) after poling and curing at 220°C for 1 h. The thermal behavior of these NLO sol-gel materials was studied by temperature-dependent dielectric relaxation. The results indicate that the crosslinking density of cured NLO sol-gel materials was increased with increasing alkoxysilane content. Subsequently, better temporal stabilities were obtained for the poled/cured NLO sol-gel materials with a higher alkoxysilane content. Moreover, the structural influence of alkoxysilanes on the thermal behavior and second-order nonlinearity was also studied for these NLO sol-gel materials.

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