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Recently, we determined using spatial modulation spectroscopy, over a broad optical spectralrange, the spectrum and amplitude of the absorption cross-section of individual semiconductingsingle-wall carbon nanotubes.[1] Here, we will present resonant Raman excitation profiles (REP)of radial breathing modes and G modes measured on the same SWNTs. The transition energiesand full width at half-maximum (FWHM) obtained using both measurements techniques will becompared to discuss the different models commonly used to fit REP [2] as illustrated on Figure1. Furthermore, interference effects on Raman intensity [3] will also be evidenced in the case oftwo energetically close optical transitions. Finally, some recent results obtained on other systems(SWNTs homogeneous dimer and double-walled carbon nanotubes) will be briefly reported.[1] J.-C. Blancon et al., Nat. Comm. 4 (2013), 2542.[2] C. Thomsen and S. Reich, M. Cardona, R. Merlin (Eds.): Light Scattering in Solid IX,Topics Appl. 3.Physics 108 (2007), pp. 116-232.[3] V. N. Popov and Ph. Lambin, Phys. Rev. B 73 (2006), 165425.