Eur. Phys. J. B 78, 95-102 (2010)
https://doi.org/10.1140/epjb/e2010-10339-x

Parameter-dependent third-order optical nonlinearity in a CdSe/ZnS quantum dot quantum well in the vicinity of a gold nanoparticle

¹ Department of Physics, Wuhan University, Wuhan, 430072, P.R. China
² Key Laboratory of Acoustic and Photonic Material and Devices, Ministry of Education, Wuhan University, Wuhan, 430072, P.R. China

Corresponding author: ^a dzyao@whu.edu.cn

Received: 27 April 2010
Revised: 23 September 2010
Published online: 28 October 2010

Abstract

The nonlinear optical properties of the CdSe/ZnS quantum dot quantum well (QDQW) in the vicinity of a spherical metal nano-particle (MNP) have been described. The third-order nonlinear optical susceptibility induced by the transition between E₁ (inside the well) and E₂ (outside the well) has been calculated for the third-harmonic generation (THG) under the effective mass approximation and modified by the local field theory. The parameters-dependent third-order nonlinear optical susceptibility for the THG has been specifically explored and the influence of the distance between the QDQW and the MNP on the third-order susceptibility for the THG in the system has been shown and analyzed.