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Measuring spin Hall effect of light by cross-polarization intensity ratio

机译:通过交叉极化强度比测量光的自旋霍尔效应

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摘要

We propose and realize a simple technique to measure the tiny spin Hall effect of light from the ratio of the minimum and the maximum intensities along two cross-polarization directions, without the requirement of a position-sensitive detector in the conventional weak measurement. Furthermore, the weak intensity ratio is dramatically amplified by purposely choosing the intensity along the direction close to that of the minimum instead of the maximum along the perpendicular polarization direction, which is verified by the experimental results. In principle, this method also can be modified for measurement of the high extinction ratio of a polarizer.
机译:我们提出并实现了一种简单的技术,该技术可以根据两个交叉偏振方向上的最小强度和最大强度之比来测量光的微小自旋霍尔效应,而在传统的弱测量中无需使用位置敏感检测器。此外,通过有选择地沿着接近最小极化强度的方向而不是沿着垂直极化方向产生最大强度来显着放大弱强度比,这已得到实验结果的证实。原则上,也可以修改该方法以测量偏振片的高消光比。

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