Huygens Laboratory, Leiden University, Leiden, The Netherlands.
Opt Lett. 2011 Feb 1;36(3):409-11. doi: 10.1364/OL.36.000409.
This Letter reports an experimental and theoretical study of the response of a quadrant detector (QD) to an incident vortex beam, specifically a Laguerre-Gaussian (LG) beam. We have found that the LG beam response depends on the vorticity index ℓ. We compare LG beams with hard-ringed beams and find that at higher ℓ values, the QD response to LG beams can be approximated by its response to hard-ringed beams. Our findings are important in view of the increasing interest in optical vortex beams.
这封信件报告了一项关于象限探测器（QD）对入射涡旋光束，特别是拉盖尔-高斯（LG）光束响应的实验和理论研究。我们发现，LG 光束的响应取决于涡旋指数 ℓ。我们将 LG 光束与硬环光束进行了比较，发现对于更高的 ℓ 值，QD 对 LG 光束的响应可以近似为其对硬环光束的响应。鉴于人们对光涡旋光束的兴趣日益增加，我们的研究结果具有重要意义。
