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요약정보
金属-电介质约束的半导体微盘激光器 / Metallo-dielectric Confined Semiconductor Microdisk Lasers
Resource Type
Academic Journal
Authors
刘军
;
吴根柱
;
陈达如
;
刘旭安
;
卢启景
;
LIU Jun
;
WU Gen-zhu
;
Chen Da-ru
;
LIU Xu-an
;
LU Qi-Jing
Source
光子学报 / Acta Photonica Sinica
. 41(12):1464-1469
Subject
微盘激光器
回音壁模式
品质因数
模体积
有限元法
Language
Chinese
ISSN
1004-4213
Online Access
Scopus
JCR 저널정보
Find it @ DONGA
초록
设计了一种以半导体材料InGaAsP作为核心结构的器件表面蒸镀二氧化硅膜层,在其上蒸镀金膜层,构成金属电介质半导体微盘激光器结构,盘面的厚度为2μm,盘面半径为6 μm ,盘壁侧表面与底面的夹角为45°.使用有限元法对该结构器件的回音壁模式进行数值研究.利用所谓“偏微分方程的弱项形式”有效地抑制了许多局域不变性相关的“伪解”.通过数值求解弱项型矢量亥姆霍兹方程,得到微盘激光器回音壁模式的横磁场分布,在此基础上讨论了其品质因数(Q值)、模体积、不同金属和电介质膜厚度对器件品质因数的影响、盘的半径和其品质因素的关系等相关量,理论计算表明,这种结构的器件较直接在介质表面蒸镀金属膜层结构的器件的品质因数高2~3倍,实验还获得了基阶和高阶的表面等离子体波模式,以及品质因数最大达到约5100的光学-电介质基模.
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