Large optical nonlinearity of semiconducting single-walled carbon nanotubes under resonant excitations

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

研究成果: Article査読

86 被引用数 (Scopus)

抄録

We measured third-order nonlinear susceptibility (x(3)) spectra in semiconducting single-walled carbon nanotubes (SWNTs) by the Z-scan method. |Imχ(3)| is remarkably enhanced under resonant excitation to the lowest interband transition, reaching 4.2 × 10-6 esu and 1.5 × 10-7 esu in SWNTs grown by the laser ablation and HiPco methods, respectively. A comparison of the transient absorption changes evaluated by degenerate and nondegenerate pump-probe measurements suggests that the resonant enhancement of |Imχ(3)| is dominated by a coherent process rather than by saturation of absorption.

本文言語English
論文番号047404
ジャーナルPhysical Review Letters
94
4
DOI
出版ステータスPublished - 2005 2 4
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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