基于纳米光学等离子晶体的新型纳米光子学器件的发展

通过设计合适的纳米表面等离子结构,纳米光学等离子晶体具有光场增强效应,能调控近场范围内的光场分布,可用来设计新型的纳米光子学器件。介绍了纳米光学等离子晶体的原理、结构特点、制作工艺和纳米光子学器件的设计方法,对纳米光学等离子晶体和普通光子晶体做了比较。归纳了纳米光学等离子晶体的物理机制、光学特征,描述并分析了波长选择性场增强效应和束流效应等。给出几种基于纳米光学等离子晶体的纳米光子学器件应用实例。

Development of novel nano-photonics devices based on nano-optical plasmonic crystals

To control the movements of photons in nano-scale three-dimensional space and to fabricate nano-photonics devices have became the goal of scientists for a long time.The appearance of nano-optical plasmonic crystals(NPCs) introduces a new way to implement this goal,and it further becomes the technical foundation for the researching of nano-photonics devices.By designing appropriate nano-scale surface corrugations,NPCs have abilities to enhance the optical field and to adjust the intensity distribution of the field in near-field regions.So NPCs can be used to design novel nano-photonics devices.The principle of NPCs and design features of them are introduced here,together with the fabrication and designing method of them.Comparisons between NPCs and common photonic crystals are performed.The physical mechanisms and optical features of NPCs are summarized.Wavelength-selective enhancement effect and beaming effect brought by NPCs are described and analyzed.Some applications based on NPCs are presented.