Third-order optical nonlinearities of carbon nanotubes in the femtosecond regime
- 18 October 2004
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 85 (16), 3572-3574
- https://doi.org/10.1063/1.1808226
Abstract
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.Keywords
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