AI 中文总结
研究利用脉冲激光辐照控制碲晶体c轴取向，开发无光刻的可重构超表面。通过激光写入光轴图案制作分束器，实验验证其光学响应与理论相符。该方法制造简单，能重写和动态配置功能，为非谐振有源超表面等应用提供平台。
AI 中文摘要
激光可编程光学各向异性为开发无需传统纳米制造工艺的可重构超表面提供了一条新途径。在此，我们展示了一种基于脉冲激光辐照对碲（Te）晶体c轴取向进行空间控制的无光刻方法。作为概念验证，我们通过激光写入光轴图案展示了一个碲超表面分束器，并通过实验证实其光学响应与理论预测和数值模拟高度吻合。通过直接编程局部光学各向异性，该方法实现了简单的制造过程，同时提供了重写和动态重新配置器件功能的可能性。这些特性使该方法成为非谐振有源超表面和其他可重构平面光学应用的有前途的平台。
英文摘要
Laser-programmable optical anisotropy offers a new route to developing reconfigurable metasurfaces without conventional nanofabrication processes. Here, we demonstrate a lithography-free approach based on spatial control of the crystallographic $c$ axis orientation in tellurium (Te) using pulse laser irradiation. As a proof of concept, we demonstrate a Te metasurface beam splitter by laser-written optical-axis patterning and experimentally confirm that its optical response is in good agreement with theoretical predictions and numerical simulations. By directly programming the local optical anisotropy, this method enables a simple fabrication process while offering the possibility of rewriting and dynamically reconfiguring device functionality. These features make this approach a promising platform for non-resonant active metasurfaces and other reconfigurable flat-optics applications.
