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

doi:10.1088/1742-6596/21/1/029

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

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	177-182
Number of pages	6
Journal	Journal of Physics: Conference Series
Volume	21
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/21/1/029
Publication status	Published - 2005 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Nonlinear and ultrafast optical response in single-walled carbon nanotubes",

abstract = "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.",

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AU - Maeda, A.

AU - Matsumoto, S.

AU - Kishida, H.

AU - Takenobu, T.

AU - Iwasa, Y.

AU - Shiraishi, M.

AU - Ata, M.

AU - Okamoto, H.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - 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.

AB - 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.

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