使用径向偏振扭曲光直接观察法拉第旋转
Direct Observation of the Faraday Rotation Using Radially-Polarized Twisted Light
AI总结：
本文提出一种利用LG光实现法拉第效应的新型实验技术，通过线偏振器生成强度瓣并观察其间隙取向的可见旋转，直观测量偏振面的旋转程度。
摘要：
本文描述了一种使用Laguerre-Gaussian (LG) 光实现光学法拉第效应的新型实验技术。该实验采用零阶涡旋半波延迟器来生成径向或方位向偏振的LG环形光束。从延迟器出射的光随后穿过一个线偏振器，产生两个强度瓣，两个瓣之间强度间隙的取向平行（垂直）于径向（方位向）偏振光束的偏振方向。为完成法拉第装置设置，光束穿过置于磁场中的材料，随后穿过最终的线偏振器，这会导致瓣图样发生可见的旋转。该技术直观地展示了法拉第效应，无需进一步复杂的步骤来检测光强度的变化。偏振面的旋转程度直接由两个瓣之间强度间隙取向的清晰可见变化来确定。
英文摘要：
A novel experimental technique for the realisation of the optical Faraday effect using Laguerre- Gaussian (LG) light is described. The experiment employs a zero-order vortex half-wave retarder to generate a radially or azimuthally-polarised LG doughnut beam. The light emerging from the retarder then passes through a linear polariser, which gives rise to two intensity lobes, with the orientation of the intensity gap between the two lobes pointing parallel (perpendicular) to the polarization direction of the radially (azimuthally) polarised beam. To complete the Faraday set up, the light traverses a material subject to a magnetic field, before passing through a final linear polariser, which results in a visible rotation of the lobes pattern. This technique exhibits the Faraday effect readily visually, without further elaborate steps to detect changes in the light intensity. The degree of rotation of the plane of polarisation is determined directly by the visibly clear change in the orientation of the intensity gap between the lobes.
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。
