Study of resonance Raman cross section of aqueous β-carotene at low concentrations

被引：42

作者：

Tian, Yan-Jie ^{[1
]}

Zuo, Jian ^{[1
]}

Zhang, Liu-Yang ^{[1
]}

Li, Zuo-Wei ^{[1
]}

Gao, Shu-Qin ^{[1
]}

Lu, Guo-Hui ^{[1
]}

机构：

[1] Jilin Univ, Key Lab Coherent Light Atom & Mol Spect, Educ Minist China, Coll Phys, Changchun 130023, Peoples R China

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2007年 / 87卷 / 04期

关键词：

D O I：

10.1007/s00340-007-2633-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Applying Teflon-AF waveguide cell, we determined the absolute resonance Raman cross sections (RCS) for C=C and C-C stretching modes of beta-carotene in aqueous solution at low concentrations (10(-6)-10(-10) M) by measuring Raman intensity. It was unexpected that the RCS increased rapidly with the decrease of concentration at extremely low concentration range (10(-8)-10(-10) M), and it reached the value of 1.22x10(-21) cm(2) molecule(-1) Sr-1 at 2.5x10(-10) M larger than general RCS (10(-30)cm(2) molecule(-1)Sr(-1)) for 10(9) times. Additionally, we give the tentative theory exploration for the experimental results that the large RCSs at low concentrations attributed to both resonance Raman effect and dipole-induced dipole interactions between solute and solvent molecules.

引用

页码：727 / 730

页数：4

共 18 条

[1]

Berdyugin V. V., 1986, Optics and Spectroscopy, V61, P192

[2] Simple approach to determining absolute Raman cross sections using an optical parametric oscillator [J].