矢量焦场的构建、调控与表征及其在光学微操纵中的应用

项目名称： 矢量焦场的构建、调控与表征及其在光学微操纵中的应用

项目编号： No.11474156

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 丁剑平

作者单位： 南京大学

项目金额： 105万元

中文摘要： 本项目以构建相位、偏振和振幅等多个参量独立可调的矢量焦场及其应用为目的，寻找相位、偏振和振幅的空间分布可调的新型矢量光场的产生方法，设计特殊构型的矢量焦场，研究矢量焦场在光学微操纵中的应用和效应。建立空间分布变化的多参量的矢量光场的时空演化模型，探讨相位、偏振和振幅等多参量可调的入射光场对聚焦特性的影响，特别关注对焦场中的参量分布进行调控的方法。研究具有特定空间构型的矢量焦场的设计方法和实验手段，实现多参量调控的矢量焦场的优化设计。探索多参量受控矢量焦场中的自旋光学流和轨道光学流的动力学效应，重点研究焦场中的空变偏振态分布的自旋力性质。研究近场条件下的矢量焦场激发金属表面等离激元的特性，以及激发表面等离激元在光学微操纵中的动力学效应，探讨矢量焦场设计在超分辨率显微成像以及其他近场光学中的应用途径。研究矢量场属性参量测量和表征的新方法，寻找适用于焦场探测的实验手段和理论分析方法。

中文关键词： 矢量光束；衍射光学；光束整形；聚焦；光镊

英文摘要： This project aims to configure the multi-parameter controllable vectorial focusing and explore its applications. we will make approcah to property and generation of vector beams with aribitray polarization state, to design the focus with specific structure, and to explore physical effects as well as the applications of focus shaping in optical micromanipulation. Our study will focus on the following issues: to establish the formalism of propagation of vector field with space-variant parameters; to explore the focusing property of vector beams and to study how to tailor focal volume structure through the manipulation of phase and polarization of the incident light beam; to look for the novel method and experimetal configuration to realize the vector beams with spatially inhomogeneous polarization, phase as well as amplitude and to find the way to perform phase modulation and polarization control of vector beams; to invesitigate the optical currents in the vectorial focus and to analyze the dynamics of spin and orbital corrents; to invesitage the possibility of exciting suface polaritons by using the vectorial focus and to find the optical traping properties of the suface polaritons excied by the vector beams; to expand the applications of vectorial focus in the near-field optics as well as super-solution imaging; to develop the methods for measuring the distrbutions of multi-parameter of vector field and the expremental setups for this purpose.

英文关键词： vctor beams;diffractive optics;beam shaping;focusing;optical tweezers