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Absorption spectra of the s-SWCNT film and solution in the visible to near-infrared region. The spectra of the laser (peaks at 850 nm and 810 nm) are also shown with gray and white colors, respectively, to understand which excitonic resonance is excited by the laser in each case; * represents the resonance in the film and † is that in solution when the central wavelength of the laser is 850 nm.
(a) Time-resolved and signals observed in s-SWCNT film and solution at 850 nm. The black solid lines represent the fit with damped harmonic oscillations. (b) FT spectra obtained from the time domain data in (a). The FT intensity for the solution is magnified by a factor of 18.
(a) Comparison of the time-resolved signals observed at 850 nm in the film of s-SWCNTs at different polarization angles. (b) Corresponding FT spectra obtained from the time-domain data in (a).
FT integral of the RBM peak at 7.2 THz in the film of s-SWCNTs for the two different wavelengths as a function of pump polarization. The solid curves are the fit with the phenomenological function described in the text.
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