Abstract
In this paper the influence of electric field on quadratic electro optic effects (QEOE) and electro absorption (EA) process in spherical quantum dot are theoretically investigated. The third order nonlinear susceptibilities of GaN/AlGaN off centered defect spherical quantum dot are calculated by taking into account of the external electric field. The results show that electric field has important influence on the third order nonlinear susceptibilities. It is found that with increase of electric field quadratic electro optic effect and electro absorption process susceptibilities are varied semi sinusoidally and blue shifted. Results also show that the resonance wavelength of the third order susceptibility is decrease slowly in the greater electric field.
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