@article { ISI:000269310600079,
	title = {Ultrafast switching time and third order nonlinear coefficients of microwave treated single walled carbon nanotube suspensions},
	journal = {Journal of Nanoscience and Nanotechnology},
	volume = {9},
	number = {9},
	year = {2009},
	note = {International Conference on Nanoscience and Technology, Chennai, INDIA, FEB 27-29, 2008},
	month = {SEP},
	pages = {5550-5554},
	publisher = {AMER SCIENTIFIC PUBLISHERS},
	address = {25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA},
	abstract = {<p>Microwave treated water soluble and amide functionalized single walled carbon nanotubes have been investigated using femtosecond degenerate pump-probe and nonlinear transmission experiments. The time resolved differential transmission using 75 femtosecond pulse with the central wavelength of 790 nm shows a bi-exponential ultrafast photo-bleaching with time constants of 160 fs (130 fs) and 920 fs (300 fs) for water soluble (amide functionalized) nanotubes. Open and closed aperture z-scans show saturation absorption and positive (negative) nonlinear refraction for water soluble (amide functionalized) nanotubes. Two photon absorption coefficient, beta(0) similar to 250 cm/GW (650 cm/GW) and nonlinear index, gamma similar to 15 cm(2)/pW (-30 cm(2)/pW) are obtained from the theoretical fit in the saturation limit to the data for two types of nanotubes.</p>},
	keywords = {Nonlinear Optical Coefficients, SWCNT, Ultra-Fast Switching},
	issn = {1533-4880},
	doi = {10.1166/jnn.2009.1184},
	author = {Kamaraju, N. and Kumar, Sunil and Karthikeyan, B. and Kakade, Bhalchandra A. and Pillai, Vijayamohanan K. and Sood, A. K.}
}
