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题名: WG-like modes selectivity in a square cavity with posts
作者: Chen Q;  Huang YZ
发表日期: 2006
摘要: We investigate the characteristics of Whispering-Gallery(WG)-like modes in a square cavity with posts by employing the two-dimentional (2D) finite-difference time-domain (FDTD) technique combined with the effective index method. The results indicate that the posts can result in mode selection in the WG-like modes. The WG-like modes with odd mode numbers are not much sensitive to the sizes of the posts. However, the quality factor (i.e. Q-factor) of the WG-like modes with even mode numbers decreases sharply with the increasing size of the posts. The decreasing Q-factor is attributed to mode leakage and scattering loss due to the presence of the post. The mode selection increases with the mode spacing of square cavity twice in an optimized strucure.
KOS主题词: Q-factor;  microcavities;  Resonators;  emission
刊名: CHINESE PHYSICS LETTERS
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Chen Q; Huang YZ .WG-like modes selectivity in a square cavity with posts ,CHINESE PHYSICS LETTERS,2006,23(6):1470-1472
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