3RD-HARMONIC GENERATION FROM ALL-TRANS BETA-CAROTENE IN LIQUID SOLUTION

被引：17

作者：

VANBEEK, JB

ALBRECHT, AC

机构：

[1] Department of Chemistry, Baker Laboratory, Cornell University, Ithaca

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 187卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(91)90424-8

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：

The third-order nonlinear susceptibility of all-trans beta-carotene dissolved in benzene or carbon tetrachloride has been measured by third-harmonic generation at several incident laser wavelengths from 1.030 to 1.221-mu-m. Its magnitude grows from 1.8 x 10(-11) esu at 1.030-mu-m to 3.8 X 10(-11) esu at 1.221-mu-m. Its phase is close to 180-degrees and constant indicating the essential-lack of one-, two-, and three-photon resonances in each of their corresponding spectral regions. The absence of any two-photon resonance in the 515-611 nm spectral region is particularly significant, for it is here where the photobiologically important 2 1A(g) electronic state of beta-carotene is thought to be located.

引用

页码：269 / 276

页数：8

共 20 条

[1] NONLINEAR SPECTROSCOPY IN POLYDIACETYLENES [J].