Third-order optical nonlinearity in single-wall carbon nanotubes

A. M. Nemilentsau*, G. Ya Slepyan, A. A. Khrutchinskii, S. A. Maksimenko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The third-order optical nonlinearity in carbon nanotubes (CNT) exposed to an intensive external electromagnetic field has been investigated. The analysis is based on the quantum kinetic equations for the density matrix of π-electrons in CNT. In the regime of weak driving field, the kinetic equations have been solved by the perturbation method and the third-order nonlinear polarizability of different achiral CNTs has been calculated. The theory elaborated has been used for the evaluation of nonlinear susceptibility of CNT-based composites. Comparison with available experimental data has been presented. In the case of high intensive driving field a nonperturbative numerical simulation of the process has been carried out in the time domain. The axial current density in CNT has been calculated. Excitation of π-plasmons in CNTs has been analyzed.

Original languageEnglish
Pages (from-to)2246-2253
Number of pages8
JournalCarbon
Volume44
Issue number11
DOIs
StatePublished - Sep 2006
Externally publishedYes

Funding

FundersFunder number
INTAS
NATO Science for Peace ProgramSfP-981051
State Committee for the Science and Technology of Belarus03-50-4409
World Federation of Scientists05-109-4595

    Keywords

    • Carbon nanotubes
    • Optical properties

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