项目名称： 基于贝里相位的光学超颖表面波前调控特性及应用

项目编号： No.61505007

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 黄玲玲

作者单位： 北京理工大学

项目金额： 22万元

中文摘要： 超颖表面以其平面超薄、超小像素、宽带无色散以及逐点调控等优势，具备灵活的波前调控能力，成为近年来快速发展的微纳光学前沿研究领域。本项目在申请人前期提出的基于贝里相位超颖表面的研究基础上，针对超颖表面的理论设计、功能应用、动态可调仍面临的若干瓶颈问题开展系统研究。建立任意入射条件下光与超颖单元相互作用的三维电/磁偶极矩理论解析模型，发展超颖表面对光场波前逐点调控的解析/半解析矢量算法；研究提高可见光波段透射型超颖表面能量利用率的有效方案；深入分析基于超颖表面的各类复用机制, 实现超大容量、高分辨率的超颖表面多功能光波前调控；探索改变外部调制参数情况下超颖表面－石墨烯或超颖表面－相变材料复合结构对光场主动调控的物理机制，为发展出一类高效率、功能化、主动调控的超颖表面器件奠定坚实基础。

中文关键词： 超颖材料；超颖表面；波前调控；全息；贝里相位

英文摘要： Optical metasurfaces have the advantages of ultrathin surface-confined planar structures, ultra-small pixel size, broadband dispersion-less property and point to point controllability, thus can flexibly modulate the flow of light. Metasurfaces have been one of the quickly developed cutting edge research fields with potential important applications. Based on our previous research achievements of Pancharatnam-Berry type metasurfaces, this project is aimed at the development of the innovative theoretical, functional applications, and active tunabilities of the metasurfaces. The main research tasks and key solutions are as follows: (1) Establishing and improving the three-dimensional electric/magnetic dipole radiation theoretical model to analyze the interaction of light and metasurfaces with arbitrary incident conditions, developing analytical/semi-analytical algorithm to calculate the vector wavefront distributions through metasurfaces; (2) Studying the effective methods to enhance the efficiency of transmitted metasurfaces in visible range; (3) Revealing the multiplexing mechanisms of metasurfaces devices, to extend the abilities of various wavefront controlling with large capacity and high resolution; (4) Exploring the physical mechanisms of active wavefront tunabilites based on metasurface-graphene or metasurface-phase change material composite structures under external modulation conditions. Through the systematic studies, we lay a solid foundation of a novel type of metasurface devices with high efficiency, multi-functionality and active tunability.

英文关键词： metamaterials;metasurfaces;wavefront modulation;holography;Pancharatnam-Berry phase