Nonlinear optical susceptibility of core-shell quantum dot

In this work, the effect of some geometrical parameters such as core radius, inner and outer shell thickness on the third-order nonlinear optical susceptibility of GaN-AlN-GaN nanostructure have been investigated. The quadratic electro-optic effect was calculated as a function of the pump photon wavelength. The results showed that due to confining of carriers in the quantum dot core, the nonlinear optical susceptibility of proposed quantum dot increased by increasing the core radius. By changing the radiuses of the inner and outer shell, the magnitude of the resonance wavelength remains invariant