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首页> 外文期刊>Physica, B. Condensed Matter >Impurity effects on optical property of a spherical quantum dot in the presence of an electric field
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Impurity effects on optical property of a spherical quantum dot in the presence of an electric field

机译：电场作用下杂质对球形量子点光学性能的影响

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摘要

An investigation of the optical properties of a spherical quantum dot (QD) with parabolic confinement potential containing one electron has been performed for the cases with a donor impurity and an acceptor impurity in the presence of an electric field. The oscillator strength between the ground and the first excited states in the QD has been calculated as functions of the confinement strength and the applied electric field. Based on the computed energies and wave functions, the linear, third-order nonlinear, the total optical absorption coefficients and the optical refractive index have been examined in detail. The results are presented as a function of the incident photon energy for the different values of the confinement strength and the electric field. It is found that the optical properties of a QD are strongly affected not only by the confinement strength, the applied electric field but also by the property of the impurity.
机译：对于在电场存在下具有施主杂质和受主杂质的情况，已经进行了具有抛物线限制电势且包含一个电子的球形量子点（QD）光学特性的研究。已根据约束强度和施加的电场计算了QD中基态和第一激发态之间的振荡器强度。根据计算出的能量和波函数，对线性，三阶非线性，总光吸收系数和光学折射率进行了详细检查。对于约束强度和电场的不同值，结果表示为入射光子能量的函数。已经发现，QD的光学性质不仅受到约束强度，施加的电场的影响，而且还受到杂质性质的强烈影响。

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