Nonlinear optical rectification of GaAs/Ga1–x Al x As quantum dots with Hulth-en plus Hellmann confining potential

Abstract

We investigate the nonlinear optical rectification (NOR) of spherical quantum dots (QDs) under Hulthén plus Hellmann confining potential with the external tuning elements. Energy and wavefunction are determined by using the Nikiforov–Uvarov method. Expression for the NOR coefficient is derived by the density matrix theory. The results show that the applied external elements and internal parameters of this system have a strong influence on intraband nonlinear optical properties. It is hopeful that this tuning of the nonlinear optical properties of GaAs/Ga1–x Al x As QDs can make a greater contribution to preparation of new functional optical devices.