Enhancement of quality factor for TE whispering-gallery modes in microcylinder resonators

被引：27
|
作者：
Yang, Yue-De [1 ]
Huang, Yong-Zhen [1 ]
Guo, Wei-Hua [2 ]
Lu, Qiaoyin [2 ]
Donegan, John F. [2 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
[2] Trinity Coll Dublin, Sch Phys, Semicond Photon Grp, Dublin 2, Ireland
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 12期
基金：
爱尔兰科学基金会;
关键词：
LASERS;
D O I：
10.1364/OE.18.013057
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The enhancement of quality factor for TE whispering-gallery modes is analyzed for three-dimensional microcylinder resonators based on the destructive interference between vertical leakage modes. In the microcylinder resonator, the TE whispering-gallery modes can couple with vertical propagation modes, which results in vertical radiation loss and low quality factors. However, the vertical loss can be canceled by choosing appropriate thickness of the upper cladding layer or radius of the microcylinder. A mode quality factor increase by three orders of magnitude is predicted by finite-difference time-domain simulation. Furthermore, the condition of vertical leakage cancellation is analyzed. (C) 2010 Optical Society of America
引用
收藏
页码：13057 / 13062
页数：6
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