Dephasing in semiconducting single-walled carbon nanotubes induced by exciton-exciton annihilation

被引：22

作者：

Abramavicius, Darius ^{[1
,2
]}

Ma, Ying-Zhong ^{[3
,4
]}

Graham, Matthew W. ^{[3
,4
]}

Valkunas, Leonas ^{[1
,2
]}

Fleming, Graham R. ^{[3
,4
]}

机构：

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

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

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 19期

基金：

美国国家科学基金会;

关键词：

carbon nanotubes; excitons; photon echo; semiconductor nanotubes; SOLVATION DYNAMICS; NONLINEAR OPTICS; PHOTON-ECHO; SPECTROSCOPY; NANOSTRUCTURES;

D O I：

10.1103/PhysRevB.79.195445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-pulse photon echo peak-shift measurements were performed on semiconducting single-walled carbon nanotubes embedded in a polymer matrix at room temperature. We found a striking dependence of the peak shift on the excitation intensity. Numerical simulations based on an interacting-boson model demonstrate that the intensity dependence originates from a highly nonlinear optical response initiated by exciton-exciton annihilation.

引用

页数：6

共 28 条

[1] Nonlinear optics of semiconductor and molecular nanostructures; a common perspective [J].