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Get Free AccessNonlinear transmission of 80 and 140fs pulsed light with 0.79μm wavelength through single walled carbon nanotubes suspended in water containing sodium dodecyl sulfate is studied. Pulse-width independent saturation absorption and negative cubic nonlinearity are observed, respectively, in open and closed aperture z-scan experiments. The theoretical expressions derived to analyze the z-dependent transmission in the saturable limit require two photon absorption coefficient β0∼1.4cm∕MW and a nonlinear index γ∼−5.5×10−11cm2∕W to fit the data.
N. Kamaraju, Sunil Kumar, Anil K. Sood, Shekhar Guha, S. Krishnamurthy, Cnr Rao (2007). Large nonlinear absorption and refraction coefficients of carbon nanotubes estimated from femtosecond z-scan measurements. Applied Physics Letters, 91(25), DOI: 10.1063/1.2825409.
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Type
Article
Year
2007
Authors
6
Datasets
0
Total Files
0
Language
English
Journal
Applied Physics Letters
DOI
10.1063/1.2825409
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