Femtosecond spectroscopy of optical excitations in single-walled carbon nanotubes: Evidence for exciton-exciton annihilation

被引：205

作者：

Ma, YZ ^{[1
]}

Valkunas, L

Dexheimer, SL

Bachilo, SM

Fleming, GR

机构：

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

[2] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA

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

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

[5] Rice Univ, Dept Chem, Houston, TX 77005 USA

[6] Rice Univ, Ctr Biol & Environm Nanotechnol, Houston, TX 77005 USA

[7] Washington State Univ, Dept Phys, Pullman, WA 99164 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.94.157402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Frequency-resolved femtosecond transient absorption spectra and kinetics measured by optical excitation of the second and first electronic transitions of the (8,3) single-walled carbon nanotube species reveal a unique mutual response between these transitions. Based on the analysis of the spectra, kinetics, and their distinct amplitude dependence on the pump intensity observed at these transitions, we conclude that these observations originate from both the excitonic origin of the spectrum and nonlinear exciton annihilation.

引用

页数：4

共 21 条

[1] Structure-assigned optical spectra of single-walled carbon nanotubes [J].