红外与毫米波学报2023，Vol.42Issue(1)：72-77,6.DOI:10.11972/j.issn.1001-9014.2023.01.010
基于多路径正反馈机制的零折射率超材料高效纳米激光器
High-efficiency nano laser based on multipath positive feedback mechanism of matching zero-index metamaterials
摘要
Abstract
For the traditional Fabry-Perot cavity laser, the field perpendicular to cavity wall will be resonantly en? hanced until it breaks with the threshold and escapes out of the cavity, while the field emitted obliquely dissipates outside the cavity leading to the low efficiency. Here a high-efficiency laser cavity is proposed resorting to meta? materials. Based on the multipath positive feedback mechanism, the photons emitted form atoms in any direction can only leak out of the cavity along one direction and no photons run out of the cavity which showed potential for improving the efficiency. Furthermore, this combination of cavity is almost independent of atom position. In ad? dition, we designed a realistic dielectric micro-structure system made of two-dimensional photonic crystals to con? firm our proposal. When the gain medium is introduced into the system, the cavity can provide both a lower las? ing threshold and a higher maximum emission intensity, compared with the individual zero-index materials cavi? ty, demonstrating improved lasing efficiency.关键词
多路径正反馈机制/激射效应/零折射率超材料Key words
multipath positive feedback/lasing effect/zero-index metamaterials分类
通用工业技术引用本文复制引用
张振清,董丽娟,邓富胜,李云辉,许静平,孙勇,陈鸿..基于多路径正反馈机制的零折射率超材料高效纳米激光器[J].红外与毫米波学报,2023,42(1):72-77,6.基金项目
Supported by the National Natural Science Foundation of China(91850206,11974261) （91850206,11974261）
the Shanghai Science and Technology Commit-tee(18ZR1442900).Science and Technology Innovation Group of Shanxi Province,China(201805D131006),Key Research and Development Program of Shanxi Province,China(201903D121026).The Central Government guides local science and Technology Development Fund projects(Grant No.YDZJSX2021B011). （18ZR1442900）
