Khan Saba N, Joshi Stuti, Senthilkumaran P
Opt Lett. 2021 Sep 1;46(17):4136-4139. doi: 10.1364/OL.434177.
In this Letter, Young's double-slit experiment with vector vortex beams is investigated. We present the results for various Poincaré-Hopf index beams of this class considering all four major types. Polarization associated morphological changes in the far-field interference pattern are studied both theoretically and experimentally. The Fraunhofer pattern consists of lattices of polarization singularities of the generic type, located on a line, in a direction perpendicular to the slit. The number of linear lattices varies as a function of Poincaré-Hopf index of the beam that is diffracted, and the number of intensity nulls occurring along the vertical line is equal to ||.
在这封信中，我们研究了矢量涡旋光束的杨氏双缝实验。我们给出了考虑所有四种主要类型的此类各种庞加莱 - 霍普夫指数光束的结果。从理论和实验两方面研究了远场干涉图样中与偏振相关的形态变化。夫琅禾费图样由一般类型的偏振奇点晶格组成，这些奇点位于与狭缝垂直方向的一条直线上。线性晶格的数量随被衍射光束的庞加莱 - 霍普夫指数而变化，并且沿垂直线出现的强度零点数量等于|| 。
