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Saturable and reverse saturable absorption in silver nanodots at 532 nm using picosecond laser pulses
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10.1063/1.2990056
/content/aip/journal/jap/104/7/10.1063/1.2990056
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2990056
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup for the degenerate pump-probe experiment.

Image of FIG. 2.
FIG. 2.

(a) Absorption spectra of silver nanodots of different particle sizes. The upward arrow corresponds to the excitation wavelength for the -scan measurement. (a) 12 nm, (b) 17 nm, (c) 20 nm, and (d) 52 nm. (b) AFM picture of silver nanodots of an average particle size of 17 nm. (c) SEM picture of silver nanodots of an average particle size of 17 nm.

Image of FIG. 3.
FIG. 3.

Open aperture -scan results of the Ag naonodots with an average particle size of 17 nm at low laser intensities. The solid lines are the theoretical fits to the experimental data using Eq. (4).

Image of FIG. 4.
FIG. 4.

(a) Open aperture -scan results of the Ag nanodots with an average particle size of 17 nm at higher laser intensities. (b) Transmittance of Ag nanodots as a function of input laser intensity.

Image of FIG. 5.
FIG. 5.

Comparison of the open aperture -scan signal for the nanodots with average particle sizes of 17 and 52 nm at an input laser intensity of .

Image of FIG. 6.
FIG. 6.

(a) Variation in with input laser intensity for the nanodots of an average particle size of 17 nm. (b) Variation in with input laser intensity for the nanodots of an average particle size of 52 nm.

Image of FIG. 7.
FIG. 7.

derived from the open and closed aperture data using Eq. (5). The solid line is the theoretical fit using the equation given in Ref. 15.

Image of FIG. 8.
FIG. 8.

Transient transmission when only SA is present. The solid line is the best fit to the experimental data.

Image of FIG. 9.
FIG. 9.

Energy level diagram for the electron dynamics in Ag nanoparticles leading to SA and RSA.

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/content/aip/journal/jap/104/7/10.1063/1.2990056
2008-10-03
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Saturable and reverse saturable absorption in silver nanodots at 532 nm using picosecond laser pulses
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2990056
10.1063/1.2990056
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