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Nonlinear optical absorption and stimulated Mie scattering in metallic nanoparticle suspensions
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10.1063/1.4773340
/content/aip/journal/jcp/138/2/10.1063/1.4773340
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/2/10.1063/1.4773340

Figures

Image of FIG. 1.
FIG. 1.

Linear absorbance spectra of four metallic NPs solutions in toluene at lower concentrations than those used in the nonlinear transmission measurements. The inset shows the TEM images of four metallic NPs.

Image of FIG. 2.
FIG. 2.

Linear transmission spectra of four metallic NPs solutions in toluene with high concentrations for nonlinear absorption measurements.

Image of FIG. 3.
FIG. 3.

Nonlinear transmission versus the intensity (energy) of the input femtosecond laser pulses. The best-fit curves are given by simple 2PA theory [see Eq. (3) ].

Image of FIG. 4.
FIG. 4.

Nonlinear transmission versus the intensity (energy) of the input nanosecond laser pulses. The best fitting curves are given by the phenomenological 2PA + ESA theory [see Eq. (11) ].

Image of FIG. 5.
FIG. 5.

Experimental setup for measuring the backward stimulated scattering from a metallic NPs’ solution.

Image of FIG. 6.
FIG. 6.

Measured output stimulated scattering energy versus the input pump pulse energy for three different metallic NPs solutions.

Image of FIG. 7.
FIG. 7.

Spectral photographs of the input ∼800 nm pump pulse alone (a), the pump pulse and stimulated scattering (SS) pulse together (b), and the SS pulse alone (c). The spectral profiles of the input ∼800 nm pump pulse (dashed line) and the SS pulse (solid line) are shown in (d).

Image of FIG. 8.
FIG. 8.

Measured waveforms of the input ∼800 nm pump pulse (a) and the SS pulse (b).

Image of FIG. 9.
FIG. 9.

The far-field patterns of the input pump beam (a) and the backward stimulated scattering beam (b). The focusing length was 40 cm.

Tables

Generic image for table
Table I.

Fitting parameters for nonlinear transmission data measured in both fs- and ns-regime.

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/content/aip/journal/jcp/138/2/10.1063/1.4773340
2013-01-10
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nonlinear optical absorption and stimulated Mie scattering in metallic nanoparticle suspensions
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/2/10.1063/1.4773340
10.1063/1.4773340
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