We present twisted spatiotemporal optical vortex (STOV) beams, which are partially coherent light sources that possess a coherent optical vortex and a random twist coupling their space and time dimensions. These beams have controllable partial coherence and transverse orbital angular momentum (OAM), which distinguishes them from the more common spatial vortex and twisted beams (known to carry longitudinal OAM) in the literature and should ultimately make them useful in applications such as optical communications and optical tweezing. We present the mathematical analysis of twisted STOV beams, deriving the mutual coherence function and linear and angular momentum densities. We simulate the synthesis of twisted STOV beams and investigate their free-space propagation characteristics. We discuss how to physically generate twisted STOV fields and lastly conclude with a summary and brief discussion of future research.

中文翻译：

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扭曲的时空光学涡旋随机场

我们提出了扭曲的时空光学涡旋（STOV）光束，它是部分相干的光源，具有相干的光学涡旋和随机扭曲，耦合了它们的时空维度。这些光束具有可控的部分相干性和横向轨道角动量（OAM），这使其与文献中较为常见的空间涡旋光束和扭曲光束（已知带有纵向OAM）区别开来，最终应使其在诸如光通信和光通讯等应用中有用。光镊。我们介绍了扭曲的STOV光束的数学分析，推导了相互相干函数以及线性和角动量密度。我们模拟扭曲的STOV光束的合成，并研究其自由空间传播特性。