Ultrafast Stimulated Raman Scattering in Carbon Nanotubes

ORAL

Abstract

We perform ultrafast transient absorption spectroscopy on (6,5) carbon nanotubes in aqueous solution, using a near-IR pump and supercontinuum near-IR probe. We observe stimulated Raman scattering between the pump and probe light involving the nanotube G phonon mode, and examine the dependence of this Raman feature on the pump and probe wavelengths and pump fluence. We find that the stimulated Raman process is enhanced when the probe energy is near the nanotube exciton resonance, allowing us to investigate exciton-phonon coupling in the nanotubes.

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Presenters

  • Steven Drapcho

    • University of California, Berkeley

Authors

  • Steven Drapcho

    • University of California, Berkeley

  • Chaw Keong Yong

    • University of California, Berkeley

  • Avishek Saha

    • Los Alamos National Lab

  • Stephen K. Doorn

    • Los Alamos National Lab
    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

  • Feng Wang

    • University of California - Berkeley
    • University of California, Berkeley
    • Physics, UC Berkeley
    • Department of Physics, University of California at Berkeley, Berkeley, CA 94709, USA
    • University of California at Berkeley
    • Lawrence Berkeley National Laboratory and UC Berkeley
    • UC Berkeley
    • Physics, University of California, Berkeley