自加速激光束的光场调控、传输及其应用研究

项目名称： 自加速激光束的光场调控、传输及其应用研究

项目编号： No.11474120

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： 文伟

作者单位： 怀化学院

项目金额： 70万元

中文摘要： 自加速激光束具有传输不变、自愈合以及横向自加速三大特性。这些特性使其在弯曲等离子体通道产生、光学清扫、微粒操控、电子加速、时空光弹和全光路由等领域有重要应用。本项目理论结合实验重点研究以下几个方面的内容：研究携带螺旋位相和扭曲位相的自加速光束在自由空间及光学系统中的传输特性；研究径向偏振和角向偏振自加速光束的时空演化特性；研究各种特殊关联的部分相干自加速光束在光学系统中的传输特性；研究经振幅、位相、偏振、相干性调控后的自加速光束在湍流大气中的传输特性；探索利用各种调控手段降低自加速光束在湍流大气中的光束扩展、漂移、闪烁等负面影响的方案；研究多参量联合调控对自加速光束传输特性的影响；探索根据实际需要优化调控方案的方法。在此基础上探讨被调控的自加速光束在光学成像及图像加密、光学俘获以及量子信息等领域的应用。本项研究工作将丰富自加速光束的传输与调控的基础理论，为其实际应用提供依据。

中文关键词： 自加速光束；光场调控；传输特性

英文摘要： Existing research show that the self-accelerating beams have the properties of propagation-invariant, self-healing and self-accelerating, which make them very useful in the field of curved plasma channels generation, optically clearing, particle manipulation, electron acceleration, light bullet and optical routing and so on.In this project, we mainly plan to carry out the following research topic both theoretically and experimentally.We will study the propagation properties of self-accelerating beams with spiral phase and twist phase in free space and optical system. We will study the evolution of self-accelerating beams with radial and azimuthal polarizations in the space-time domain. We will study the propagation properties of self-accelerating beams with different complex degrees of coherence in the optical system. We will study the propagation properties of self-accelerating beams with aplitude modulation, phase modulation, polarization modulation and coherence modulation in the turbulence atmosphere. By choosing suitble modulation means, we will explore the possible way to reduce the negative influence of turbulence such as beam spreading, beam wander and scintillation index. We will study the influence on propagation of self-accelerating beams with multi-parameter modulation. We will explore the way which can optimize modulation according to the actual need. On the basis of the above research, we will discuss the applications of the self-accelerating beams in optical imaging and encryption, optical trapping and quantum information. This project will enrich the propagation and modulation theory of self-accelerating beams, and the main results of this project will provide the basis for the applications of self-accelerating beams in practice.

英文关键词： self-accelerating beams;optical field modulation;propagation properties