Spatio-Temporal Plasma Metasurfaces for Topologically Protected Beam Steering: A Theoretical Framework

We introduce a new laser platform based on SpatioTemporal Programmable Topological Plasma Metasurfaces (STPT-PMs), giving a unique combination of self-adaptive control, topologically protected beam steering, and frequency agility. The device incorporates a time- and spacemodulated dielectric metasurface embedded in an argonfilled microplasma cell, allowing dynamic light manipulation via voltage-controlled plasma modulation and topological domain-wall navigation. Fabricated utilizing cost-effective methods—including photolithographic patterning, waferbonded microplasma assembly, and Ni/ITO electrode integration—the platform displays robust performance with ±50° beam steering, MHz-scale frequency tunability, and significant tolerance to structural disorder. Statistical study demonstrates strong beam integrity even with 10% device degradation. This study establishes the framework for tiny, intelligent laser systems appropriate for adaptive LIDAR, reconfigurable beamforming, quantum communication, and integrated photonics.

本研究提出一种基于时空可编程拓扑等离子体超表面（SpatioTemporal Programmable Topological Plasma Metasurfaces，STPT-PMs）的新型激光平台，该平台兼具自适应调控、拓扑保护光束转向与频率捷变的独特性能。该器件将时空调制介质超表面嵌入充氩微等离子体单元中，可通过电压调控等离子体调制与拓扑畴壁导航实现动态光操控。该平台采用光刻构图、晶圆键合微等离子体组装以及镍/氧化铟锡（Ni/ITO）电极集成等低成本工艺制备，展现出优异性能：光束转向范围达±50°、兆赫兹级频率调谐能力，且对结构无序具有显著耐受性。统计分析表明，即便器件出现10%的性能退化，光束仍可保持良好的完整性。本研究为适用于自适应激光雷达（LIDAR）、可重构波束成形、量子通信及集成光子学的小型化智能激光系统搭建了技术框架。