Large nonlinear absorption and refraction coefficients of carbon nanotubes estimated from femtosecond z-scan measurements

Kamaraju, N; Kumar, Sunil; Sood, A K; Guha, Shekhar; Krishnamurthy, Srinivasan; Rao, C N R

dc.contributor.author	Kamaraju, N
dc.contributor.author	Kumar, Sunil
dc.contributor.author	Sood, A K
dc.contributor.author	Guha, Shekhar
dc.contributor.author	Krishnamurthy, Srinivasan
dc.contributor.author	Rao, C N R
dc.date.accessioned	2011-04-01T10:00:54Z
dc.date.available	2011-04-01T10:00:54Z
dc.date.issued	2007-12-17
dc.identifier	0003-6951	en_US
dc.identifier.citation	Applied Physics Letters 91(25), 251103-1-3 (2007)	en_US
dc.identifier.uri	https://libjncir.jncasr.ac.in/xmlui/10572/104
dc.description.abstract	Nonlinear transmission of 80 and 140 fs pulsed light with 0.79 mu m 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 beta(0)similar to 1.4 cm/MW and a nonlinear index gamma similar to-5.5x10(-11) cm(2)/W to fit the data. (c) 2007 American Institute of Physics.	en_US
dc.description.uri	http://dx.doi.org/10.1063/1.2825409	en_US
dc.language.iso	en	en_US
dc.publisher	American Institute of Physics	en_US
dc.rights	© 2007 American Institute of Physics	en_US
dc.subject	Optical Limiting Behavior	en_US
dc.subject	Saturable Absorption	en_US
dc.subject	Suspensions	en_US
dc.subject	Polymer	en_US
dc.title	Large nonlinear absorption and refraction coefficients of carbon nanotubes estimated from femtosecond z-scan measurements	en_US
dc.type	Article	en_US