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Ultrafast nonlinear optical properties of alkyl-phthalocyanine nanoparticles investigated using Z-scan technique
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10.1063/1.3079801
/content/aip/journal/jap/105/5/10.1063/1.3079801
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/5/10.1063/1.3079801

Figures

Image of FIG. 1.
FIG. 1.

(a) Structure of the phthalocyanine whose nanoparticles were studied. (b) TEM image of the nanoparticles dispersed in water.

Image of FIG. 2.
FIG. 2.

Absorption spectra of PcN in water (solid curve), PcN in chloroform resulting in PcM (dashed curve), and pure phthalocyanine in chloroform (dotted curve).

Image of FIG. 3.
FIG. 3.

Emission spectra of PcM and PcN (a) excited with 300 and 330 nm, respectively, and (b) excited with 650 nm.

Image of FIG. 4.
FIG. 4.

(a) Open aperture Z-scan data (open circles) for PcM in chloroform obtained for an intensity of . Solid line is the best fit. [(c) and (d)] Open aperture Z-scan curves obtained for PcM at different intensities.

Image of FIG. 5.
FIG. 5.

Open aperture data for PcN in water indicating the presence of three-photon absorption. Inset shows the closed aperture data representing positive nonlinearity.

Image of FIG. 6.
FIG. 6.

Optical limiting curve obtained for PcM (open circles) and PcN (open squares) dispersed in water and dissolved in chloroform, respectively. Solid line is the linear transmittance curve.

Tables

Generic image for table
Table I.

Two-photon absorption coefficients , three-photon absorption coefficients , nonlinear refractive indices , and clamping thresholds of the phthalocyanines excited with 800 nm wavelength, 110 fs pulses.

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/content/aip/journal/jap/105/5/10.1063/1.3079801
2009-03-13
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast nonlinear optical properties of alkyl-phthalocyanine nanoparticles investigated using Z-scan technique
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/5/10.1063/1.3079801
10.1063/1.3079801
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