Using the effective mass approximation, within the plane wave expansion, the effect of in-plane magnetic field on the electronic states and the intersubband optical absorption in a two-dimensional GaAs eccentric quantum ring are studied. The obtained results show that an applied magnetic field, eccentricity and the light polarization direction provide efficient tools to tune the peaks positions and intensities in the optical absorption coefficients. In addition some allowed optical transitions with strong intensity which occurs only in eccentric QRs under an x oriented magnetic field can be considered as footprint of eccentricity. It is also found that, for y-polarization of the light incident, the effect of eccentricity on the optical absorption spectra is preserved in the presence of magnetic field, whereas, its effect vanish at large magnetic field in the case of x-polarization.

利用有效质量近似，在平面波扩展内，研究了平面内磁场对二维GaAs偏心量子环中电子态和子带间光吸收的影响。所获得的结果表明，施加的磁场，偏心率和光偏振方向提供了有效的工具来调整光吸收系数中的峰位置和强度。此外，某些仅在x定向磁场下的偏心QR中发生的，具有较强强度的允许光学跃迁可以视为偏心率的足迹。还发现，对于入射光的y偏振，在磁场存在的情况下，偏心率对光吸收光谱的影响得以保留，而