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Nonlinear Optical Properties of Mushroom-Shaped CdSe/CdS Coreshells

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Abstract:

The third-order nonlinear optical susceptibilities of mushroom-shaped CdSe/CdS coreshells as a function of concentration have been investigated using polarization- and concentration-resolved degenerate four-wave mixing in a resonant region. The effective third-order nonlinear optical susceptibilities, |χ (3) xxxx | and |χ (3) xyyx |, of CdSe/CdS coreshells were estimated to be ∼1.86 × 10−21–1.03 × 10−20 m2/V2, and ∼0.45 × 10−21–6.15 × 10−21 m2/V2, respectively, for various concentrations of ∼0.64 × 10−3–4.95 × 10−3 mol/m3. The second hyperpolarizabilities, |〈γh xxxx | and |〈γh xyyx |, of CdSe/CdS coreshells were extracted to be ∼2.37 × 10−41 m5/V2 and ∼1.29 × 10−41 m5/V2, respectively.

Keywords: CDSE/CDS CORESHELLS; DEGENERATE FOUR-WAVE MIXING; THIRD-ORDER NONLINEAR OPTICAL SUSCEPTIBILITY

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2009.C152

Publication date: 2009-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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