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Two-photon absorption in quantum dots based on a nonconjugated conductive polymer
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View: Figures


Image of FIG. 1.
FIG. 1.

Molecular structure of poly(-pinene).

Image of FIG. 2.
FIG. 2.

Quantum dots in poly(-pinene) created upon doping with iodine and consequent charge transfer from the double bond to the dopant. The encircled regions represent the quantum dots with a subnanometer dimension.

Image of FIG. 3.
FIG. 3.

Optical absorption spectra of poly(-pinene) for different of molar concentrations of dopant. Lightly doped , medium doped , and heavily doped .

Image of FIG. 4.
FIG. 4.

Open-aperture -scan data of organic of doped poly(-pinene) at 750, 810, and . The measurement has been made using pulses from a Ti:sapphire laser.

Image of FIG. 5.
FIG. 5.

Two-photon absorption coefficient in doped poly(-pinene) as a function of wavelength. Two peaks at and have been observed.

Image of FIG. 6.
FIG. 6.

Saturation of absorption in doped poly(-pinene) measured at different wavelengths. The saturation decreases at longer wavelengths since linear absorption decreases at longer wavelengths (the solid line is a guide to the eye).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-photon absorption in quantum dots based on a nonconjugated conductive polymer