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arXiv 1111.3444cond-mat.mes-hall
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三维各向异性量子点的非线性光学性质

Nonlinear optical properties of a three-dimensional anisotropic quantum dot

Tairong Chen, Wenfang Xie

摘要:

利用紧致密度矩阵方法和迭代法研究了三维各向异性量子点在相对于$z-$轴的均匀磁场作用下的线性和非线性光学性质.详细研究了抛物势的特征频率、磁场和入射光强对线性和非线性光学性质的影响。此外,考虑到有效质量随位置的变化,研究了量子点半径对线性和非线性光学性质的影响。结果表明,这些因素对各向异性量子点的光吸收系数和折射率的变化有很大的影响,位置效应对各向异性量子点的光吸收系数和折射率的变化也有重要影响.

英文摘要:

The linear and nonlinear optical properties in a three-dimensional anisotropic quantum dot subjected to a uniform magnetic field directed with respect to the $z-$axis have been investigated within the compact-density matrix formalism and the iterative method. The dependence of the linear and nonlinear optical properties on characteristic frequency of the parabolic potential, on the magnetic field and on the incident optical intensity is detailedly studied. Moreover, take into account the position-dependent effective mass, the dependence of the linear and nonlinear optical properties on the dot radius is investigated. The results show that the optical absorption coefficients (ACs) and refractive index (RI) changes of the anisotropic quantum dot (QD) have strongly affected by these factors, and the position effect also plays an important role in the optical ACs and RI changes of the anisotropic QD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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