Transport and correlated fluctuations in the nonlinear optical response of excitons

被引：44

作者：

Abramavicius, D.

Valkunas, L.

Mukamel, S.

机构：

[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[2] Vilnius State Univ, Fac Phys, Dept Theoret Phys, LT-10222 Vilnius, Lithuania

[3] Inst Phys, LT-02300 Vilnius, Lithuania

来源：

EPL | 2007年 / 80卷 / 01期

关键词：

D O I：

10.1209/0295-5075/80/17005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Closed expressions are derived for the femtosecond four-wave mixing of excitons which include slow Gaussian diagonal fluctuations (spectral diffusion) through the cumulant expansion and incoherent exciton transport induced by fast Markovian fluctuations. The interplay of both processes in the two-dimensional photon echo is demonstrated using model calculations for a dimer. Copyright (C) EPLA, 2007.

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页数：6

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