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Spectrally resolved size-dependent third-order nonlinear optical properties of colloidal CdSe quantum dots
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10.1063/1.3679381
/content/aip/journal/apl/100/4/10.1063/1.3679381
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/4/10.1063/1.3679381

Figures

Image of FIG. 1.
FIG. 1.

TEM and HRTEM (inset) representative micrographs of CdSe QDs from chloroform solution showing the size uniformity and crystallinity of the dots.

Image of FIG. 2.
FIG. 2.

(Color online) Representative OA and CA raw Z-Scans traces at 800 nm (black symbols) and the theoretical fits (red lines) for CdSe QDs with 3.2 and 4.2 nm size, respectively.

Image of FIG. 3.
FIG. 3.

(Color online) Dispersion of the real and imaginary parts of the complex hyperpolarizability γ of CdSe QDs with 3.2 and 4.2 nm size determined from Z-scan measurements in chloroform solutions containing 1.5% w/w of the NPs.

Image of FIG. 4.
FIG. 4.

(Color online) Dispersion of the effective two-photon absorption cross section (taken per an individual NP) and comparison to one-photon absorption spectra (right-hand blue scale) of CdSe QDs with size 3.2 and 4.2 nm, respectively.

Tables

Generic image for table
Table I.

Comparison of two-photon absorption coefficient β and effective two-photon absorption cross section σ2 for colloidal solution of CdSe QDs estimated by the use of femtosecond laser pulses.

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/content/aip/journal/apl/100/4/10.1063/1.3679381
2012-01-23
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spectrally resolved size-dependent third-order nonlinear optical properties of colloidal CdSe quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/4/10.1063/1.3679381
10.1063/1.3679381
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