Figure 1

Absorption spectrum of the COMOCAT SWCNT sample in xerogel.Reuse & Permissions

Figure 2

(a) 2D map of $\Delta T/T(\tau ,{\lambda }_{\mathrm{pr}})$; (b) 2D map of the oscillatory component of $\Delta T/T(\tau ,{\lambda }_{\mathrm{pr}})$; (c) differential transmission dynamics at selected wavelengths (black 560 nm, red 580 nm, blue 600 nm); (d) scheme of impulsive wave packet excitation in a two-level system, where the electronic energy $\Omega$ of a PES is given as a function of two normal coordinates $Q_1$ and $Q_2$. The PES of the excited state (electronic excitation energy ${\Omega }_{00}$) is displaced by ${\Delta }_1$ and ${\Delta }_2$ The states are coupled by an optical transition dipole moment $\mu$ leading to a electronic relaxation time $T_1^{\mathrm{el}}$.Reuse & Permissions

Figure 3

(a) Experimental and (b) calculated Fourier spectrum of the coherent oscillations in Fig. 2b as a function of probe wavelength. (c) A zoom into the RBM region of (a).Reuse & Permissions

Figure 4

Experimental amplitude (red) and phase (blue) profiles of the (a) RBM and (c) $G$-mode coherent oscillations. The corresponding simulated profiles are (b) for the RBM and (d) for the $G$ mode.Reuse & Permissions

Figure 5

Calculated amplitude profile of the $G$ mode for different $e\mathrm{\text{−}}\mathrm{ph}$ coupling parameters. The curves are normalized to their primary maximum. Circles: Experimental data.Reuse & Permissions