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Organically modified inorganic sol‐gel materials for second‐order nonlinear optics
Author(s) -
Lee RongHo,
Hsiue GingHo,
Jeng RuJong
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20010307)79:10<1852::aid-app140>3.0.co;2-v
Subject(s) - poling , sol gel , prepolymer , materials science , dielectric , curing (chemistry) , nonlinear optics , polymer chemistry , relaxation (psychology) , chemical engineering , composite material , nonlinear system , nanotechnology , ferroelectricity , optoelectronics , physics , engineering , polyurethane , psychology , social psychology , quantum mechanics
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 = ∼10.8–54.0 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. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 79: 1852–1859, 2001