DETERMINATION OF THE HYPERPOLARIZABILITY OF AN OCTOPOLAR MOLECULAR ION BY HYPER-RAYLEIGH SCATTERING

被引：89

作者：

VERBIEST, T

CLAYS, K

PERSOONS, A

MEYERS, F

BREDAS, JL

机构：

[1] UNIV MONS,SERV CHIM MAT NOUVEAUX,B-7000 MONS,BELGIUM

[2] UNIV LEUVEN,MAT RES CTR,B-3001 LOUVAIN,BELGIUM

来源：

OPTICS LETTERS | 1993年 / 18卷 / 07期

关键词：

D O I：

10.1364/OL.18.000525

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The first observation to our knowledge of a second-order nonlinear optical effect in a nonpolar molecular ion is reported. Hyper-Rayleigh scattering was observed from aqueous and organic solutions of the tricyanomethanide ion [C(CN)3]-. Because of the absence of a dipole moment and the presence of a charge in this planar, nonpolar, but highly polarizable molecular anion with D3h symmetry, no electric-field-induced second-harmonic-generation experiments are possible. The experimental values for the first hyperpolarizability beta(xxx) [(7 +/- 1.5) X 10(-30) esu, independent of the solvent] are in good agreement with the results from quantum-chemical calculations.

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页码：525 / 527

页数：3

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