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Ultrafast electron dynamics and cubic optical nonlinearity of freestanding thin film of double walled carbon nanotubes
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10.1063/1.2977463
/content/aip/journal/apl/93/9/10.1063/1.2977463
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2977463
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Optical absorption spectrum of DWNT film. and are the first and second interband transition energies of the semiconducting nanotubes and is the first transition energy of metallic tubes. Dotted arrow shows the energy where degenerate PP and -scan measurements were done. Inset shows RBMs at 135 and corresponding to the average diameter of 1.97 and 1.65 nm, respectively, of the outer tubes.

Image of FIG. 2.
FIG. 2.

Normalized transmittance data (open circles) in (a) OA -scan and (b) CA -scan (aperture linear ). Theoretical fit (solid line) is obtained with , , and .

Image of FIG. 3.
FIG. 3.

Pump intensity dependent where the probe intensity is kept at . The inset shows PA part of differential transmission data (normalized to its PB peak height) for three values of the pump intensities, , , and . It can be seen from the inset that the PA is almost negligible for the highest pump intensity. Solid lines are the single exponential decay fit to the data with the time constant of 1.8 ps.

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/content/aip/journal/apl/93/9/10.1063/1.2977463
2008-09-03
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast electron dynamics and cubic optical nonlinearity of freestanding thin film of double walled carbon nanotubes
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2977463
10.1063/1.2977463
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