介观光波导的非线性光学及光力特性研究

To investigate the nonlinear optical and optical force features of mesoscopic optical waveguides, new mechanism and physics could be explored and discovered, which will provide more opportunities for developing high-performance and multi-functional mesoscopic optoelectronic devices. Specifically, this project is going to do the following work: 1) to develop a theoretical momentum compensating method based on quasi-phase matching like principle, understand the influence of factors such as waveguide structures, optical modes and polarizations, so as to effectively increase the modal overlap between the fundamental and harmonic modes in waveguides, and construct high-efficiency second-harmonic wavelength converter on the mesoscopic scale; 2) to explore in-depth physics behind optical force coupling effects in optical microfibers, bring in new idea upon solving debates on optical force formula and photon momenta, realize expected control over multi-dimensional movements of optical microfibers, design polarization- and mode-selective optical force actuated devices, develop novel acoustic-optic components and related techniques, construct in-line and reconfigurable optical force actuated fiber gratings, and expand the applications of optical force effects in sensing and all-optical switching. The implementation of this project would be an innovative investigation of optical manipulation physics and applications, which will further open up new avenues of mesoscopic photon-matter interactions and give strong impetus to sustainable applications and developments of micro-/nanophotonics.

开展介观光波导中的非线性光学及光力特性研究，挖掘与发现光场调控的新机理和新物理，将为制备高性能、多功能的介观尺度光电器件提供更多可能。本项目拟开展如下研究：1) 发展类准相位匹配的动量补偿理论方法，掌握波导结构、光场模式与偏振等要素的影响，有效增加相位匹配时波导中基频光与倍频光的模式重叠，构建高效率波长转换的介观尺度光学二倍频器件；2) 深入研究微纳光纤体系中光力耦合作用的物理，得到光力计算公式与光动量争议解决的新思路，实现多维度的微纳光纤光力控制宏观运动，研制具有偏振、模式选择特性的光力器件，发展微纳光纤声光调制新器件及相关技术，构建在线可重构的光力-光纤光栅，并拓展光力效应在传感、全光开关等方面的应用。本项目的实施是光场调控物理及应用研究领域的一次创新探索，将进一步开拓介观尺度光场与物质相互作用的范畴，推动微纳光学在相关领域的应用与发展。

开展介观光波导中的非线性光学及光力特性研究，挖掘与发现光场调控的新机理和新物理，将为制备高性能、多功能的介观尺度光电器件提供更多可能。本项目开展了类准相位匹配的新型动量补偿理论方法研究，设计得到了相应的非线性光学波长转换波导器件；研究了微纳光纤中多维度运动的有效控制、声波模式的有效光学激发的方式，设计得到了具有偏振、模式选择特性新机理、新结构的光力器件方案。项目的实施有效拓展了掌握介观尺度波导中非线性光学相互作用、光力相互作用方面的新机理，构建得到了若干高性能的波长转换、光力作用新型光子器件，是微纳光学领域的创新应用与发展。在项目资助下，截止目前已发表SCI论文10篇（其中6篇一区论文），申请专利6项，参加国内外相关会议4次（邀请报告）。以项目实施为契机，邀请了国际国内相关领域的专家8人次来访、讲学，加强国内外学术合作交流。