Third-order optical nonlinearities of carbon nanotubes in the femtosecond regime
J-S. LauretLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FranceChristophe VoisinLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FranceG. CassaboisLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FranceJ. TignonLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FranceC. DelalandeLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FrancePh. RoussignolLaboratoire Pierre Aigrain , École Normale Supérieure, 24, rue Lhomond, 75005 Paris, FranceO. JostInstitut für Werkstoffwissenschaft der TU Dresden , D-01062 Dresden, GermanyLaurence CapesLaboratoire d’Électronique Moléculaire-CEA∕Motorola , 91193 Gif-sur-Yvette, France
2004en
ABI
Аннотация
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.
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