Coherent monochromatic phonons in highly purified semiconducting single-wall carbon nanotubes
Coherent monochromatic phonons in highly purified semiconducting single-wall carbon nanotubes
We have used a femtosecond pump-probe impulsive Raman technique to explore the polarization dependence of coherent optical phonons in highly-purified and aligned semiconducting single-wall carbon nanotubes (SWCNTs). Coherent phonon spectra for the radial breathing modes (RBMs) exhibit a different monochromatic frequency between the film and solution samples, indicating the presence …