Lv Han, Zhou Tong, Wang Fei, Chen Yahong, Cai Yangjian, Korotkova Olga
Opt Lett. 2021 Feb 1;46(3):693-696. doi: 10.1364/OL.416205.
Up to now, methods for generating non-uniformly correlated light have been of two kinds: one is based on the use of specially designed random phase screens, and the other relies on the coherent-mode superposition, both being very complex experimental procedures. In this Letter, we show both theoretically and experimentally that in Young's interference experiment with light having a sufficiently large transverse coherence width, as compared with the width of the slits, the initially uniformly correlated partially coherent light converts to a non-uniformly correlated light. Such a non-uniform correlation is induced by the interference of light fields originating from the two slits. Our results point to the possibility of using diffraction by specially tailored deterministic aperture arrays for generating light with exotic coherence states.
到目前为止，产生非均匀关联光的方法有两种：一种是基于使用专门设计的随机相位屏，另一种则依赖于相干模式叠加，这两种都是非常复杂的实验过程。在本信函中，我们通过理论和实验表明，在杨氏干涉实验中，当光的横向相干宽度与狭缝宽度相比足够大时，初始均匀关联的部分相干光会转变为非均匀关联光。这种非均匀关联是由来自两条狭缝的光场干涉引起的。我们的结果表明，利用经过特殊定制的确定性孔径阵列进行衍射来产生具有奇异相干态的光具有可能性。
