Photonic spin-controlled multifunctional shared-aperture antenna array
Photonic spin-controlled multifunctional shared-aperture antenna array
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DOI：
10.1126/science.aaf3417
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发表时间：
2016-06-03
期刊：
影响因子：
56.9
通讯作者：
Hasman, Erez
中科院分区：
文献类型：
--
作者：
Maguid, Elhanan;Yulevich, Igor;Hasman, Erez
在雷达应用领域中开发的共享孔径相控天线阵列是增加光子学功能的一种有前途的方法。共享孔径概念和自旋轨道相互作用引起的几何相位现象之间的联盟提供了实现光子自旋控制多功能超颖表面的途径。我们在共享孔径合成中采用了细化技术，并研究了交织稀疏纳米天线矩阵和自旋使能的非对称谐波响应，以实现螺旋度控制的多个结构化波前，例如携带轨道角动量的涡旋光束。我们使用多路复用几何相位分布来同时测量光谱特性和光的偏振状态，从而实现集成的片上偏振光谱分析。共享孔径超颖表面平台开辟了一条通往新型纳米光子功能的途径。
The shared-aperture phased antenna array developed in the field of radar applications is a promising approach for increased functionality in photonics. The alliance between the shared-aperture concepts and the geometric phase phenomenon arising from spin-orbit interaction provides a route to implement photonic spin-control multifunctional metasurfaces. We adopted a thinning technique within the shared-aperture synthesis and investigated interleaved sparse nanoantenna matrices and the spin-enabled asymmetric harmonic response to achieve helicity-controlled multiple structured wavefronts such as vortex beams carrying orbital angular momentum. We used multiplexed geometric phase profiles to simultaneously measure spectrum characteristics and the polarization state of light, enabling integrated on-chip spectropolarimetric analysis. The shared-aperture metasurface platform opens a pathway to novel types of nanophotonic functionality.