Author Affiliations
Abstract
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
We design and demonstrate a type of multiplexed hologram by nanoscatterers inside a dielectric-loaded plasmonic waveguide with guided-wave illuminations. The mode division multiplexed hologram (MDMH) is fulfilled by the scattering of guided waves to free space with respect to different modes. According to different mode numbers, these guided modes have different responses to the multiplexed hologram, and then give rise to different holographic images in reconstructions. In experiments, we show two kinds of MDMHs based on TM0/TE0 and TE0/TE1 modes as examples. Our approach could enrich the holography method that favors on-chip integration.
090.4220 Multiplex holography 050.1970 Diffractive optics Chinese Optics Letters
2018, 16(7): 070901
南京大学固体微结构物理国家重点实验室, 现代工程与应用科学学院,人工微结构科学与技术协同创新中心, 江苏 南京 210093
表面等离激元是一种存在金属与介质界面的电磁模式, 具有亚波长传播和局域场增强的特性, 因而受到人们的青睐, 作为在微纳尺度下进行光子操纵和集成的优良载体。随着人们对表面等离激元认识的不断深入和对微纳光子器件应用需求的增加, 如何在近场范围内精确调控等离激元波的传播并实现特定的场强分布成为人们关注的热点。综述人们通过微纳结构对等离激元波进行操控所发展的新原理和新方法, 以及对波束性质和近场分布调控的研究进展; 重点介绍包括艾里波束、无衍射准直波束、角向贝塞尔波束在内的各类特殊等离激元波束的基本特性, 产生与调控的实现, 以及近年来拓展的近场全息技术; 并进一步探讨表面等离激元光场调控在新型微纳光子学器件中的可能应用。
表面光学 表面等离激元 相位调制 波束设计 面内衍射 近场全息 激光与光电子学进展
2017, 54(5): 050002
