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Large Resonant Third-order Optical Nonlinearity of CdSe Nanocrystal Quantum Dots

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, , Citation JaeTae Seo et al 2006 J. Phys.: Conf. Ser. 38 91 DOI 10.1088/1742-6596/38/1/023

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1 Department of Physics, Hampton University, Hampton, VA, 23668, USA

2 Department of Chemistry, Rice University, Houston, Texas 77005, USA

3 Korea Research Institute of Standards and Science, Daejeon, South Korea, 305-600

4 Astrochemistry Branch, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA

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1742-6596/38/1/91

Abstract

Resonant third-order nonlinear optical susceptibility and hyperpolarizability of CdSe nanocrystal quantum dots were revealed to be ∼2.6×10−20 – 2.7×10−19 m2/V2 and ∼2.2×10−40 m5/V2 by using nanosecond degenerate four-wave mixing at 532 nm. The large nonlinearity of the CdSe nanocrystals is attributed to the resonant excitation and multiple nonlinear optical processes.

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10.1088/1742-6596/38/1/023