纳米激光天线超细光纤耦合半导体激光器研究

项目名称： 纳米激光天线超细光纤耦合半导体激光器研究

项目编号： No.61306086

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 单肖楠

作者单位： 中国科学院长春光学精密机械与物理研究所

项目金额： 25万元

中文摘要： 本课题主要研究通过基于表面等离子体激元的纳米激光天线结构实现超细芯径、高功率密度、高耦合效率，光纤耦合单管半导体激光输出。该结构由于采用了物理光学方法，可以将传统的边发射半导体激光以较高的耦合效率进入超细单模光纤中。申请者立足于解决纳米激光天线结构中的光学损耗问题。尤其重点解决表面等离子体激元在纳米激光天线上汇聚的光斑大小以及如何降低损耗，并结合表面等离子体共振和表面等离子体激元在纳米激光天线尖端的汇聚效应，提出了一种利用金属-介质-棱镜的结构耦合表面等离子体激元并在金属表面传输和实现能量汇聚的纳米激光天线。通过理论模拟以及成熟的器件制备工艺，拟实现4微米芯径808nm半导体激光器单管耦合效率超过60%。为获得自主知识产权的高功率密度、高耦合效率超细光纤耦合半导体激光器件奠定了理论和技术基础，并且此结构也易于不同波长的激光器耦合进入超细光纤，拓展了光纤耦合激光器在通信、医疗等领域的应用。

中文关键词： 半导体激光器；纳米激光天线；表面等离子体；光纤耦合；超细

英文摘要： Nano laser antenna is an antenna that works in nano scale. This kind of antenna is simple in structure, and can couple semiconductor laser into an ultra-small fiber core with high efficiency because of introducing physics optical method. This task proposes to research on this new type of nano laser antenna in order to realize ultra-small fiber core coupled semiconductor laser with high efficiency. The proposer bases on solving basic physics problems, especially on the size of the optical spot converged by surface plasmon polaritons and reducing loss. We bring up a new type of nano laser with simple structure and easy processing based on our wide investigation and our own practice. We suppose to realize a single 808nm semiconductor laser couples into a 4 micro-meter fiber inner core with the coupling efficiency lager than 60% by optimizing the structure, film techniques and mature element line-up processing. This task will offer theoretical and technical supports for high power density, high efficiency ultra-small fiber core coupled semiconductor laser and for acquiring our own intellectual property, and mean while broad the applications for optical nano lithography, sensing technology, biology, medical science and optical interconnections using fiber coupling semiconductor emitter.

英文关键词： semiconductor laser；nano laser antenna；surface plasmon polariton；fible coupling；hair-thin