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Updated: Jul 18, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Coherent lattice vibrations in single-walled carbon nanotubes
Yong-Sik Lim1, Ki-Ju Yee, Ji-Hee Kim
1Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA.
Abstract:
We have generated and detected coherent lattice vibrations in single-walled carbon nanotubes corresponding to the radial breathing mode (RBM) using ultrashort laser pulses. Because the band gap is a function of diameter, these RBM-induced diameter oscillations cause ultrafast band gap oscillations, thereby modulating the interband excitonic resonances at the phonon frequencies (3-9 THz). Excitation spectra show a large number of pronounced peaks, allowing the determination of the chiralities present in particular samples and relative population differences of particular chiralities between samples.
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