title: Ultrafast carrier dynamics in single-wall carbon nanotubes.
abstract: Time-resolved carrier dynamics in single-wall carbon nanotubes is investigated by means of two-color pump-probe experiments. The recombination dynamics is monitored by probing the transient photobleaching observed on the interband transitions of the semiconducting tubes. This dynamics takes place on a 1 ps time scale which is 1 order of magnitude slower than in graphite. Transient photoinduced absorption is observed for nonresonant probing and is interpreted as a global redshift of the pi-plasmon resonance. We show that the opening of the band gap in semiconducting carbon nanotubes determines the nonlinear response dynamics over the whole visible and near-infrared spectrum.
authors.affiliation: Laboratoire de Physique de la Matière Condensée de l'Ecole Normale Supérieure 24, rue Lhomond, 75231 Paris Cedex 05, France.
authors.forename: J-S
authors.initials: JS
authors.lastname: Lauret
authors.forename: C
authors.initials: C
authors.lastname: Voisin
authors.forename: G
authors.initials: G
authors.lastname: Cassabois
authors.forename: C
authors.initials: C
authors.lastname: Delalande
authors.forename: Ph
authors.initials: P
authors.lastname: Roussignol
authors.forename: O
authors.initials: O
authors.lastname: Jost
authors.forename: L
authors.initials: L
authors.lastname: Capes