项目名称： 非对称完美涡旋光场的产生、调控及在微粒操纵中的应用

项目编号： No.61775052

项目类型： 面上项目

立项/批准年度： 2018

项目学科： 无线电电子学、电信技术

项目作者： 李新忠

作者单位： 河南科技大学

项目金额： 16万元

中文摘要： 不同于传统涡旋光场，完美涡旋光场具有亮环半径不随拓扑荷值改变的优点，在微粒操纵及量子通讯等领域具有重要的应用价值，成为近年来光场调控领域的研究热点。然而，单一的光强模式分布限制了其调控自由度和应用范围；因此，发展一种模式分布丰富、调控能力强、适用范围广的新型完美涡旋光场具有重要的科学意义。针对完美涡旋光场面临的挑战，本项目拟发展一种非对称完美涡旋光场，该新型光场结合了非对称涡旋光场和完美涡旋光场的优点，具有更高的光场调控自由度和光束操控灵活性。为实现该目标，本项目将开展非对称完美涡旋光场的产生、调控及在微粒操纵中的应用研究。通过努力，突破非对称完美涡旋光场的产生技术；阐明非对称完美涡旋光场的调控规律，揭示调控因子与被调控参数间的解析关系；最终，实现非对称完美涡旋光场在微粒操纵中的应用。本项目的开展将构建清晰的非对称完美涡旋光场的物理景象，为该新型光场在相关领域的应用提供理论依据和实验参考。

中文关键词： 光场调控；光学涡旋；完美涡旋；非对称；微粒操纵

英文摘要： Different with the traditional optical vortex, perfect vortex (PV) is becoming a research focus in the light field modulation, which has a certain vortex diameter independent of the topological charge (TC). Recently, the perfect vortex has been widely studied for applications of micro-particle manipulation and quantum communications, among others. However, the intensity mode of the PV only has a single type, which restricts the adjusting degrees of freedom and its application scope. Hence, developing a novel PV field has most important scientific significance, which can supply diverse intensity modes, more modulating degrees of freedom and wide range of applications. To meet this challenge for the research of the PV, this project proposes a new type of light field, called the asymmetric perfect vortex (APV), which possesses higher modulating degrees of freedom and more flexibility of beam shaping by combining the advantages both asymmetric vortex and perfect vortex. For this purpose, this project will study the APV’s generation, modulation and application in micro-particle manipulation. Through working hard, we will achieve the generation techniques of the APV field. Moreover, we will illustrate the modulation mechanism of the APV field, and then uncover the analytic expressions between the modulating factors and the modulated parameters of the APV. Finally, we will realize the application of the APV for micro-particle manipulation. Based on the research mentioned above, we look forward to revealing the physical image of the asymmetric perfect vortex and providing theoretical and experimental bases for its applications.

英文关键词： Light field modulation;Optical vortex;Perfect vortex;Asymmetric;Micro-particle manipulation