Abstract
The shape effect of triangular quantum dots (TQDs) on the second-harmonic generations (SHG) coefficient and the optical rectification (OR) coefficient with the applied electric field has been theoretically investigated, by using the compact-density-matrix approach and iterative method. Within the effective-mass approximation, the energy levels and the wave functions of the system are obtained. The results show that both the strength of external electric field and the shape of triangular quantum dots have a significant influence on the second-harmonic generations and the optical rectification.
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