Gain-assisted indented plasmonic waveguide for low-threshold nanolaser applications |
| |
Authors: | Liu Jie-Tao Xu Bin-Zong Zhang Jing Cai Li-Kang Song Guo-Feng |
| |
Institution: | Nano-optoelectronics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China |
| |
Abstract: | A subwavelength plasmonic indented waveguide with an active InGaAsP core is proposed. The characteristics of the gap plasmon mode and gain required for lossless propagation are investigated and analyzed by the finite element method. We numerically calculate the normalized mode areas and percentages of energy confined in InGaAsP and metal for plasmonic nanolaser applications. It is shown that the indentation of the sidewalls has an optimal value for which the lasing threshold gain is minimal. The structure could enable low-threshold subwavelength lasing and applications for optoelectronic integrated circuits. |
| |
Keywords: | optical waveguide nanolasers surface plasmon gain |
本文献已被 CNKI 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |