Room temperature terahertz electro-optic modulation by excitons in carbon nanotubes

T. Ogawa, S. Watanabe, N. Minami, R. Shimano

研究成果: Article査読

25 被引用数 (Scopus)

抄録

We have investigated the electroabsorption of aligned micelle-wrapped single-walled carbon nanotubes induced by intense terahertz (THz) pulses by using THz-pump and optical-probe spectroscopy at room temperature. The electroabsorption signal is enhanced at exciton resonances near the optical communication wavelength. The signal showed a quadratic dependence on the THz electric field and instantaneously followed the THz oscillation (∼1 ps). The observed ultrafast electro-optic modulation with a THz bandwidth suggests the potential functionality of carbon nanotubes in high-speed electro-optic devices.

本文言語English
論文番号041111
ジャーナルApplied Physics Letters
97
4
DOI
出版ステータスPublished - 2010 7月 26
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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