厦门大学 电子科学与技术学院, 福建 厦门 361005
染料掺杂的带边胆甾相液晶微激光器因阈值低、无需反射镜的特点, 自提出以来便一直是研究热点。具有复杂微结构的胆甾相液晶液滴是一种新颖的三维全向微激光器, 兼具有小型化、集成化与波长可调谐的特性, 更是引起了液晶非显示领域研究者们的广泛兴趣。其复杂的球形核壳微结构, 促使诸如分布反馈、回音壁和法布-珀罗等多种激光模式的产生。而玻璃毛细管微流控技术的出现, 使大规模制备单分散、尺寸可控的胆甾相液晶液滴成为可能, 同时为制备结构复杂的多重乳液提供了必要条件。本文简要介绍了制备液晶乳液所使用的玻璃毛细管微流控技术, 并综述了近年来与单重乳液胆甾相液晶液滴及多重乳液胆甾相液晶核壳微结构中的激光行为相关的研究工作。
全向激光 玻璃毛细管微流控技术 胆甾相液晶 乳液 液滴 核壳微结构 omnidirectional laser glass-capillary microfluidic technique cholesteric liquid crystal emulsion droplets core-shell microstructures
Author Affiliations
Abstract
Department of Electronic Engineering, Xiamen University, Haiyun Campus, Xiamen 361005, China
In this Letter, microwave generation based on frequency multiplication with fiber ring loop modulation and microwave photonic filters is proposed and experimentally demonstrated. High-order microwave harmonics can be generated and enhanced by the fiber ring loop modulation formed by incorporating a Mach–Zehnder modulator (MZM) into a fiber ring structure. Cascaded fiber ring based microwave photonic filters (FRMPFs) are adopted to filter out the desirable harmonics. In our work, with a driving signal of 2.835 GHz, the fourth-order harmonic with a frequency of 11.34 GHz is generated by using two cascaded FRMPFs.
Chinese Optics Letters
2015, 13(Suppl): S20601
中国科学院半导体研究所集成光电子学国家重点联合实验室，北京 100083
中国科学院半导体研究所集成光电子学国家重点联合实验室， 北京100083
