Nonlinear and ultrafast optical response in single-walled carbon nanotubes

A. Maeda*, S. Matsumoto, H. Kishida, T. Takenobu, Y. Iwasa, M. Shiraishi, M. Ata, H. Okamoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We measured third-order nonlinear susceptibility (χ(3)) spectra in semiconducting single-walled carbon nanotubes (SWNTs) by the Z-scan method. |Im χ(3)| is remarkably enhanced under resonant excitation to the lowest interband transition, reaching 4.2 × 10 -6 esu. A comparison of the transient absorption changes evaluated by degenerate and nondegenerate pump-probe measurements suggests that the resonant enhancement of |Im χ(3)| is dominated by a coherent process rather than by incoherent one such as saturation of absorption.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2005 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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