ResumenSe estudia teóricamente la rectificación óptica no lineal en un punto cuántico cilíndrico (CQD) en presencia de un campo magnético uniforme usando el formalismo de la matriz densidad y un procedimiento perturbativo. Los niveles de energía y las funciones de onda de un electrón en el CQD se obtuvieron solucionando la ecuación de Schrödinger independiente del tiempo en el marco de la aproximación de masa efectiva. Los cálculos numéricos se efectúan para un CQD del tipo GaAs/AlGaAs. Se encontró que el aumento en las dimensiones del CQD y/o la intensidad del campo magnético causan un aumento en su intensidad sobre el máximo de resonancia y un desplazamiento hacia regiones de energías bajas (corrimiento al rojo). La razón física de este comportamiento se atribuye al efecto del confinamiento cuántico generado por la variación de la intensidad del campo magnético y de las dimensiones de la nanoestructura. Palabras clave: rectificación óptica, punto cuántico cilíndrico, campo magnético, matriz densidadAbstract A theoretical study on the nonlinear optical rectification in a cylindrical quantum dot (CQD) in the presence of a uniform magnetic field by using the density matrix formalism and a perturbation method is presented. The energy levels and wave functions of an electron in the CQD were obtained by solving the timeindependent Schrödinger equation within the effective mass approximation. Numerical calculations are performed for a CQD of the type GaAs/AlGaAs. It was found that the increase in the dimensions of CQD and/or the magnetic field intensity cause an increase on the resonance peak intensity and a shift to lower energies regions (red shift). The physical reason for this behavior is attributed to the quantum confinement effect generated by the variation of the magnetic field strength and of the size of the nanostructure.
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