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DFWM: a proposed method to measure χ (3) on carbon nanotubes on the nanosecond time‐scale
Author(s) -
Botti S.,
Ciardi R.,
De Dominicis L.,
Fantoni R.,
Asilyan L. S.,
Fiori A.,
Appolloni R.
Publication year - 2003
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1088
Subject(s) - nanosecond , carbon nanotube , polarizability , raman spectroscopy , degenerate energy levels , materials science , mixing (physics) , measure (data warehouse) , excitation , molecular physics , nonlinear optics , optical properties of carbon nanotubes , nanotechnology , optics , analytical chemistry (journal) , nanotube , chemistry , laser , physics , molecule , organic chemistry , quantum mechanics , database , computer science
We have investigated the third order nonlinear optical properties of carbon nanotubes thick films. Nanosecond Degenerate Four Wave Mixing (DFWM) measurements have been performed at 532 and 355 nm yielding effective χ (3) values of the order of 10 −11 esu. and indicating the resonant nature of the excitation involved. The determination of the CNTs sample density by means of Scanning Electronic Microscope technique allowed to relate sample bulk properties like χ (3) to the single CNT second order polarizability coefficient. Copyright © 2003 John Wiley & Sons, Ltd.