arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.10936physics.optics
收藏

三维光场中的隐奇点

Hidden singularities in 3D optical fields

Xiaoyan Pang, Chen Feng, Bujinlkham Nyamdorj, Xinying Zhao

摘要:

本文证明了在三维光场中存在两种类型的隐奇异性,一种是自旋密度(SD)相位奇异性,另一种是SD矢量奇异性,这两种奇异性都是三维光场所特有的。讨论了这些SD奇异性的本质,并研究了它们与传统光学奇异性的联系。特别是它表明,在一个3D领域与纯粹的横向自旋密度(“光子轮”),这两种类型的奇点表现出非常有趣的行为:他们完全映射到彼此,而不管其不同的物理意义和不同的拓扑结构。我们的工作为SD奇点提供了一个基础理论,并可能为进一步探索三维光场提供一条新的途径。

英文摘要:

In this article we show that in a three dimensional (3D) optical field there can exist two types of hidden singularities, one is spin density (SD) phase singularity and the other is SD vector singularity, which are both unique to 3D fields. The nature of these SD singularities is discussed and their connection with traditional optical singularities is also examined. Especially it is shown that in a 3D field with purely transverse spin density (`photonic wheels'), these two types of singularities exhibit very interesting behaviors: they are exactly mapped to each other regardless of their different physical meanings and different topological structures. Our work supplies a fundamental theory for the SD singularities and may provide a new way for further exploration of 3D optical fields.

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。

↑