周期性调制空间拓扑结构光场的传输与焦场特性

项目名称： 周期性调制空间拓扑结构光场的传输与焦场特性

项目编号： No.61205001

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 刘圣

作者单位： 西北工业大学

项目金额： 28万元

中文摘要： 空间拓扑结构光场会表现出奇异的传输特性，在超分辨成像、超精细加工、光学微操控等领域具有巨大的应用价值。深入研究其传输行为及调制规律对于完善和丰富光学理论、拓展其应用研究均具有重要的科学意义。目前，国际上虽然相关的研究工作已有大量报导，然而仍然有许多科学问题尚未解决，特别是以周期结构调制偏振拓扑结构光场的传输及其调控手段，均鲜有报导。本项目通过对周期性调制空间拓扑结构光场的传输规律的理论分析和实验研究，在光场调控的理论和方法研究上取得系列原创性成果，为相关应用研究提供理论和实验支持。具体包括：①建立周期性调制空间拓扑结构光场传输的理论模型，探讨周期性对其调制的规律；②研究光学周期微结构中空间拓扑结构光场的传输特性，提出对光场偏振态、传输模式、角动量及拓扑结构的调控方案；③分析周期性多奇点光场的传输规律和聚焦特性，提出通过改变光场的结构参数控制其焦场的方法，以实现多粒子操控。

中文关键词： 周期结构；空间拓扑结构；光场调控；矢量光束；涡旋相位

英文摘要： Spatially topological light fields exhibit many peculiar behaviors during propagation, which are highly expected to be applied to super-resolution imaging, super-fine processing, optical micro-manipulation, etc. With the request of scientific research and engineering application, the propagations of these special light fields become an inevitable pathway of the development of the basic theory and applied research. At present, although many related research works have been reported, there still are some scientific problems, espetially the propagation and manipulation of the topologically polarized beams modulated periodically, need to be futher studied. In this project, by theoretically and experimentally analyzing the transmission characteristics of the periodically modulated topological light fields, a set of original theory achievement in light manipulation will be obtained to providing the guidances on the corresponding applied researches. The main contents are as follows: ① By esteblishing the propagation model of the periodically modulated topological light field, the manipulating of the light field with periodic structures is discussed;② The propagating properties of the spatially topological fields in periodical microstructures is studied, and the alternatives of contolling the polarization states, transm

英文关键词： periodic structures；spatically topological structure；light manipulation；vector beam；vortical phase