纳米光子学中的光学涡旋

Optical vortices in nanophotonics

在过去的二十年中,携带轨道角动量的涡旋光引起了研究人员的广泛兴趣。涡旋光不仅在光与物质相互作用中扮演着重要角色,而且可极大拓宽光学信息的承载容量。与此同时,纳米科技的发展使得纳米光子学成为一个新兴学科,开辟了利用纳米结构和器件对光进行调控的新途径。当纳米技术和涡旋光相结合时,衍生出许多新的思路和概念。本文回顾和总结了基于纳米光子学的涡旋光产生、探测及其应用,并对该研究领域的未来进行了展望。

In the last two decades,optical vortices carried by twisted light wavefronts have attracted a great deal of interest,providing not only new physical insights into light-matter interactions,but also a transformative platform for boosting optical information capacity.Meanwhile,advances in nanoscience and nanotechnology lead to the emerging field of nanophotonics,offering an unprecedented level of light manipulation via nanostructured materials and devices.Many exciting ideas and concepts come up when optical vortices meet nanophotonic devices.Here,we provide a minireview on recent achievements made in nanophotonics for the generation and detection of optical vortices and some of their applications.