Department of Physics, Indian Institute of Technology Delhi, New Delhi, India.
Opt Lett. 2013 Jul 15;38(14):2459-62. doi: 10.1364/OL.38.002459.
We demonstrate a experimental method to measure the spin Hall effect of light (SHEL), which is based on the interference between two orthogonal circularly polarized beams with the help of a polarizer. Our method can measure the SHEL across the entire exit pupil, not only at the centroid as is the case with earlier methods, and hence one can scan the transverse section of the beam. We measured the SHEL of an aluminium mirror and a glass plate using a He-Ne laser at wavelength 633 nm, for incidence angles varying from 22° to 70°. The experimental results are in good agreement with theory. We also measured the shift across the transverse section of a Gaussian beam using same method.
我们展示了一种实验方法来测量光的自旋霍尔效应（SHEL），该方法基于起偏器帮助下的两个正交圆偏振光束之间的干涉。我们的方法可以测量整个出射光瞳中的 SHEL，而不仅仅是像早期方法那样在光心处，因此可以扫描光束的横截面。我们使用波长为 633nm 的氦氖激光，在入射角从 22°到 70°的范围内，测量了铝镜和玻璃片的 SHEL。实验结果与理论很好地吻合。我们还使用相同的方法测量了高斯光束横截面的横向位移。
