THE DETERMINATION OF FIRST HYPERPOLARIZABILITIES-BETA USING HYPER-RAYLEIGH SCATTERING - A CAVEAT

被引：120

作者：

FLIPSE, MC ^{[1
]}

DEJONGE, R ^{[1
]}

WOUDENBERG, RH ^{[1
]}

MARSMAN, AW ^{[1
]}

VANWALREE, CA ^{[1
]}

JENNESKENS, LW ^{[1
]}

机构：

[1] UNIV UTRECHT, DEBYE INST, DEPT PHYS ORGAN CHEM, 3584 CH UTRECHT, NETHERLANDS

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 245卷 / 2-3期

关键词：

D O I：

10.1016/0009-2614(95)00996-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A comparison of first hyperpolarizabilities beta determined by hyper-Rayleigh scattering (HRS; beta(HRS)) and electric field-induced second-harmonic generation(EFISH; beta(EFISH)) for a series of donor-acceptor substituted pi-conjugated organic compounds shows a marked discrepancy between beta(HRS) and beta(EFISH) values for NLO-chromophores which fluoresce in the frequency-doubled wavelength region (532 nm). For MONS and DANS it is unequivocally established that two-photon absorption (TPA) at the fundamental wavelength (1064 nm) occurs followed by Stokes and anti-Stokes fluorescence around the second-harmonic wavelength. Hence, hyper-Rayleigh scattering at 1064 nm is not suited to determining the beta of these fluorescent NLO-chromophores.

引用

页码：297 / 303

页数：7

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