Third-order optical nonlinearities of carbon nanotubes in the femtosecond regime

J.-S Lauret (1) , C. Voisin (1) , Guillaume Cassabois (1) , J. Tignon (1) , C. Delalande (1) , P. Roussignol (1) , O. Jost , L. Capes (2)

1 LPA - Laboratoire Pierre Aigrain
2 LEM - Laboratoire d'Electronique Moléculaire

Femtosecond pump-probe experiments have been carried out on an ensemble of single-wall carbon nanotubes deposited on a glass substrate. Measurements of transient changes of transmission and reflection provide an estimate of the real and imaginary parts of the second-order hyperpolarizability of carbon nanotubes. These values are compared with previous measurements and are discussed in the light of a simple model of the optical nonlinearities near the optical band-gap. (C) 2004 American Institute of Physics.

Mots clés: HARMONIC-GENERATION

Domaines: Science des matériaux [cond-mat.mtrl-sci]

J.-S Lauret, C. Voisin, Guillaume Cassabois, J. Tignon, C. Delalande, et al.. Third-order optical nonlinearities of carbon nanotubes in the femtosecond regime. Applied Physics Letters, 2004, 85, pp.3572-3574. ⟨10.1063/1.1808226⟩. ⟨hal-00546637⟩