Mei Zhangrong, Korotkova Olga
Opt Lett. 2017 Jan 15;42(2):255-258. doi: 10.1364/OL.42.000255.
The propagating modes of a wide-sense stationary Schell-like source with arbitrary coherence state and a twist factor are determined. This suggests a convenient practical method for modeling novel classes of twisted partially coherent beam-like fields. The first example discusses the previously introduced twisted anisotropic Gaussian Schell-model source and verifies the feasibility of this method. As a second example, we introduce a new type of twisted partially coherent beam in which a radiated flat-top average intensity pattern remains invariant in shape (but not size) while it twists around the axis upon propagation.
确定了具有任意相干态和扭曲因子的广义平稳谢尔型源的传播模式。这为新型扭曲部分相干光束状场的建模提供了一种便捷的实用方法。第一个例子讨论了先前引入的扭曲各向异性高斯谢尔模型源，并验证了该方法的可行性。作为第二个例子，我们引入了一种新型的扭曲部分相干光束，其中辐射的平顶平均强度图案在传播时绕轴扭曲时形状（但不是大小）保持不变。
