Intense terahertz pulse-induced nonlinear responses in carbon nanotubes

Ryo Shimano, Shinichi Watanabe, Ryusuke Matsunaga

研究成果: Article査読

24 被引用数 (Scopus)

抄録

By using intense terahertz(THz) monocycle pulses, nonlinear light-matter interaction in aligned semiconducting single-walled carbon nanotubes(SWNTs) embedded in a polymer film was investigated. THz electric-field-induced ultrafast Stark effect of onedimensional excitons in SWNTs was observed at room temperature, suggesting the potential functionality of SWNTs for high speed electro-optic devices operating at telecom wavelength with a THz bandwidth. When the peak electric field amplitude exceeds 200 kV/cm, the generation of excitons by the THz pump becomes prominent. The mechanism is described by the above-gap excitation of electrons and holes in SWNTs due to the impact excitation process induced by the intense THz electric field.

本文言語English
ページ(範囲)861-869
ページ数9
ジャーナルJournal of Infrared, Millimeter, and Terahertz Waves
33
8
DOI
出版ステータスPublished - 2012 8

ASJC Scopus subject areas

  • 放射線
  • 器械工学
  • 凝縮系物理学
  • 電子工学および電気工学

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