期刊
PHYSICS LETTERS A
卷 372, 期 8, 页码 1337-1340出版社
ELSEVIER
DOI: 10.1016/j.physleta.2007.09.075
关键词
parabolic quantum dot; nonlinear optical rectification; electric and magnetic fields
The optical rectification (OR) coefficient in a parabolic quantum dots (QDs) subject to applied electric and magnetic fields is theoretically investigated in the framework of the compact-density-matrix approach and an iterative method. The confined wave functions and energies of electrons in the QDs are calculated in the effective-mass approximation. Numerical results are presented for typical GaAs/AlGaAs parabolic QDs. These results show that the OR coefficient strongly depends on the radius of QDs and the magnitude of electric and magnetic fields. And the peak shifts to the aspect of high energy when considering the influence of electric and magnetic fields. (C) 2007 Elsevier B.V. All rights reserved.
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