Unified treatment of fluorescence and Raman scattering processes near metal surfaces -: art. no. 243002

被引：187

作者：

Xu, HX

Wang, XH

Persson, MP

Xu, HQ

Käll, M

Johansson, P ^{[1
]}

机构：

[1] Univ Orebro, Dept Nat Sci, S-70182 Orebro, Sweden

[2] Chalmers, Dept Appl Phys, S-41296 Gothenburg, Sweden

[3] Lund Univ, Dept Solid State Phys, S-22100 Lund, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.93.243002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a general model study of surface-enhanced resonant Raman scattering and fluorescence focusing on the interplay between electromagnetic effects and the molecular dynamics. Our model molecule is placed close to two Ag nanoparticles and has two electronic levels. A Franck-Condon mechanism provides electron-vibration coupling. Using realistic parameter values for the molecule we find that an electromagnetic enhancement by 10 orders of magnitude can yield Raman cross sections sigma(R) of the order 10(-14) cm(2). We also discuss the dependence of sigma(R) on incident laser intensity.

引用

页数：4

共 18 条

[1]

Barnes WL, 1998, J MOD OPTIC, V45, P661, DOI 10.1080/09500349808230614

[2]

Edwards D.F., 1985, Handbook of optical constants of solids

[3] PHOTOPHYSICS AND PHOTOCHEMISTRY NEAR SURFACES AND SMALL PARTICLES [J].