Hydrogen molecular ion-related nonlinear optical rectification in quantum dots
Abstract
The influence of the internuclear distance and quantum dot size on the nonlinear optical rectification of a hydrogen
molecular ion D+
2 confined in a two-dimensional quantum dot was calculated. In the framework of the effective mass approximation,
the solutions of the resulting eigenvalue equation are obtained using the two-dimensional diagonalizationmethod. Itwas demonstrated
that the nonlinear optical rectification of the D+
2 complex shows a double-peak structure and a considerable increase in the peak
value is seen by increasing the distance between nuclei. In addition, it has been determined that the nonlinear optical rectification
amplitude is larger in large-sized QDs and in the case of high asymmetry of the system. Based on our calculations, it was shown
that by adjusting the distance between nuclei, a redshift or blueshift at the peak position of the nonlinear optical rectification of the
molecular complex can be achieved.