AI 中文总结
研究通过构建离散光学涡旋平台，设计拓扑电荷空间分布，实现形状不变、强度旋转可控反转的不对称涡旋光束，建立控制涡旋光束能量流新框架，为相关光学应用开辟新途径。
AI 中文摘要
在当代光子学中，对结构化光的旋转动力学进行精确控制已成为一个关键目标，它在控制光能的功能分布中起着核心作用。特别是，涡旋光束中轨道角动量驱动的强度旋转和方位角能量流已成为光与物质相互作用中的关键自由度。在此基础上，我们建立了一个离散光学涡旋（DOV）平台，该平台由锁相激光器的同心环组成，能够精确控制涡旋光束的旋转。通过设计DOV同心环上拓扑电荷（TCs）的空间分布，我们实现了形状不变的不对称涡旋光束，其强度旋转可控制反转，而不改变组成TCs的符号。这一结果建立了一个控制涡旋光束中能量流的新框架，超越了传统上将涡旋旋转仅与TC符号联系起来的范式。这种可控的旋转动力学为可编程光束转向、先进的光学微操纵、信息复用和自适应结构化光系统开辟了新途径。
英文摘要
Precise control over the rotational dynamics of structured lights has become a defining objective in contemporary photonics. It plays a central role in governing the functional distribution of optical energy. Particularly, orbital angular momentum driven intensity rotation and azimuthal energy flow in vortex beams have emerged as crucial degrees of freedom in light-matter interactions. Leveraging this foundation, we establish a discrete optical vortex (DOV) platform comprising concentric rings of phase-locked lasers that enable precise control over vortex-beam rotation. By engineering the spatial distribution of topological charges (TCs) across the concentric rings of DOVs, we realize shape-invariant asymmetric vortex beams with controllable reversal of intensity rotation, without altering the sign of constituent TCs. This result establishes a new framework for controlling energy flow in vortex beams, beyond the conventional paradigm that links vortex rotation solely to the sign of the TC. Such controllable rotational dynamics opens new avenues for programmable beam steering, advanced optical micromanipulation, information multiplexing, and adaptive structured-light systems.
Comments12 pages, 7 figures
