Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes

Jigang Wang, Matt W. Graham, Yingzhong Ma, Graham R. Fleming, Robert A. Kaindl

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present femtosecond mid-infrared (mid-IR) studies of the broadband low-energy response of individualized (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed in these semiconducting tubes around 200 meV photon energy. The transition energy and broadly sloping spectral shape are characteristic of quasi-1D intra-excitonic transitions between different relative-momentum states. Our result yields a value of the intra-excitonic absorption cross section of σMIR|| ≈ 4 × 10-15 cm2.

Original languageEnglish (US)
Title of host publicationUltrafast Processes in Materials Science
Number of pages6
StatePublished - 2010
Externally publishedYes
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 30 2009Dec 4 2009

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2009 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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