太赫兹涡旋光束的产生和调制及其关键功能器件研究

The characteristic of the terahertz vortex beam and its complexity and diversity have a profound impact to know the nature of light. To investigate the generation and modulation of the terahertz vortex beam has an important scientific significance and the practical value for achieving the focusing of terahertz beam and terahertz communication and terahertz controlling technology. In this proposal, we are going to carry out the systematically and deeply theoretical and experimental study to the topic of the generation and modulation of terahertz vortex beam and their functional components. Firstly, the methods for the generation of terahertz vortex beam are going to be proposed. By the establishing of theoretical model, the variation of spiral phase in the transmission will be studied, and its spiral winding number or topological charge and its angular momentum will be analyzed. The mechanism of key functional components for achieving the generation and modulation of terahertz vortex beam and their fabrication technology are going to be investigated, in particular, their structure design, performance simulation and preparation process. The method of observation and characterization of terahertz vortex, and the key components and experimental system to measure the terahertz vortex are going to be investigated so that we can measure the terahertz vortex beam and their transmission properties. We are going to explore the performance and method of focusing and transmission of terahertz vortex beam and to control the particle and cell. To find the possible use of focusing and micro-manipulation by the terahertz vortex, it will lay the foundation for the application of terahertz technology.

太赫兹涡旋光束的特征及其复杂性和多样性，对光的本性认识具有深刻的影响。研究太赫兹涡旋光束的产生和调制，对于实现太赫兹波聚束、太赫兹通信和太赫兹操控技术，具有十分重要的科学意义和实际应用价值。本项目将针对太赫兹涡旋光束产生和调制及其关键功能器件的机理，开展系统深入的理论和实验研究。首先提出太赫兹涡旋光束产生的方法，建立理论模型，研究螺旋相位在太赫兹涡旋光束传输过程中的变化规律，分析其螺旋绕数(太赫兹拓扑荷)以及轨道角动量的特性；研究实现太赫兹涡旋光束产生和调制的关键功能器件机理与制备技术，特别是相关器件的结构设计、性能仿真和制备工艺；研究太赫兹涡旋光束的观测和表征方法，研制进行太赫兹涡旋光束测量的关键器件和实验系统，对太赫兹涡旋光束及其传输特性进行测量；探索太赫兹涡旋光束传输、聚焦、操控微粒和细胞的性能与方法，寻求利用太赫兹涡旋光束实现聚束和微操控的可能应用，为太赫兹技术应用奠定基础。

本项目针对太赫兹涡旋光束产生和调制及其关键功能器件的机理，开展系统深入的理论和实验研究。首先提出太赫兹涡旋光束产生的方法，建立理论模型，研究螺旋相位在太赫兹涡旋光束传输过程中的变化规律，分析其螺旋绕数(太赫兹拓扑荷)以及轨道角动量的特性；研究实现太赫兹涡旋光束产生和调制的关键功能器件机理与制备技术，特别是相关器件的结构设计、性能仿真和制备工艺；研究太赫兹涡旋光束的观测和表征方法，研制进行太赫兹涡旋光束测量的关键器件和实验系统，对太赫兹涡旋光束及其传输特性进行测量；探索太赫兹涡旋光束传输、聚焦、操控微粒和细胞的性能与方法，寻求利用太赫兹涡旋光束实现聚束和微操控的可能应用，为太赫兹技术应用奠定基础。