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29 March 2024
 
  » arxiv » 1301.4825

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Midinfrared Third Harmonic Generation from Macroscopically Aligned Ultralong Single-Wall Carbon Nanotubes
D. T. Morris ; C. L. Pint ; R. S. Arvidson ; A. Luttge ; R. H. Hauge ; A. A. Belyanin ; G. L. Woods ; J. Kono ;
Date 21 Jan 2013
AbstractWe report the observation of strong third harmonic generation from a macroscopic array of aligned ultralong single-wall carbon nanotubes (SWCNTs) with intense midinfrared radiation. Through power-dependent experiments, we determined the absolute value of the third-order nonlinear optical susceptibility, $chi^{(3)}$, of our SWCNT film to be 5.53 $ imes$ 10$^{-12}$ esu, three orders of magnitude larger than that of the fused silica reference we used. Taking account of the filling factor of 8.75% for our SWCNT film, we estimate a $chi^{(3)}$ of 6.32 $ imes$ 10$^{-11}$ esu for a fully dense film. Furthermore, through polarization-dependent experiments, we extracted all the nonzero elements of the $chi^{(3)}$ tensor, determining the magnitude of the weaker tensor elements to be $sim$1/6 of that of the dominant $chi^{(3)}_{zzzz}$ component.
Source arXiv, 1301.4825
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