Opt Lett. 2013 Nov 15;38(22):4777-80. doi: 10.1364/OL.38.004777.
We present experimental investigations on spatially resolved Stokes parameters of vertical-cavity surface-emitting lasers (VCSELs) with a small aperture diameter of 3 μm and a monolithically integrated surface grating on top of the structure to technologically control the polarization. As expected, the grating fixes the state of polarization, but still shows both a spatially nonuniform linear polarization distribution of the fundamental transverse mode as well as an interesting eight-lobe pattern of circular polarization in terms of change of sign. These experimental findings are reproduced by numerical simulations using a fully vectorial three-dimensional model.
我们对具有 3μm 小孔径和顶部集成的用于技术控制偏振的表面光栅的垂直腔面发射激光器 (VCSEL) 的空间分辨斯托克斯参数进行了实验研究。正如预期的那样，光栅固定了偏振状态，但仍显示出基横模的空间非均匀线性偏振分布，以及在符号变化方面的有趣的八瓣圆偏振图案。这些实验结果通过使用完全矢量三维模型的数值模拟得到了重现。
