Abstract
The effect of electron–LO–phonon interaction on refractive index changes (RICs) for cylindrical quantum dots (CQDs) with an applied electric field is theoretically investigated. Analytic forms of the linear and third-order nonlinear the RICs are obtained for a cylindrical QD by using compact-density-matrix approach and iterative method, and the numerical results are presented for a GaAs cylinder quantum dot. The results show that the RICs coefficient is greatly enhanced and the peak shift to the aspect of high energy when considering the influence of electron–LO–phonon interaction.
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