Abstract
ABSTRACTMolecular second-order nonlinear optical susceptibilities (β) based on EFISH measurements in dimethylsulfoxide of selected donor-acceptor substituted organic compounds are reported. Enhanced values were noted for compounds containing highly ionizable substituents. Compounds possessing the highest susceptibilities were dissolved in polymer films and electric-field poled, leading to corresponding enhancements in the nonlinear optical coefficients. The data are consistent with molecular and thermodynamic models.
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