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题名: Investigation of mode coupling in a microdisk resonator for realizing directional emission
作者: Yang, YD (Yang, Yue-De);  Wang, SJ (Wang, Shi-Jiang);  Huang, YZ (Huang, Yong-Zhen)
发表日期: 2009
摘要: Mode coupling between the whispering-gallery modes (WGMs) is numerically investigated for a two-dimensional microdisk resonator with an output waveguide. The equilateral-polygonal shaped mode patterns can be constructed by mode coupling in the microdisk, and the coupled modes can still keep high quality factors (Q factors). For a microdisk with a diameter of 4.5 mu m and a refractive index of 3.2 connected to a 0.6-mu m-wide output waveguide, the coupled mode at the wavelength of 1490 nm has a Q factor in the order of 10(4), which is ten times larger than those of the uncoupled WGMs, and the output efficiency defined as the ratio of the energy flux confined in the output waveguide to the total radiation energy flux is about 0.65. The mode coupling can be used to realize high efficiency directional-emission microdisk lasers. (C) 2009 Optical Society of America
KOS主题词: Lasers
刊名: OPTICS EXPRESS
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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Yang, YD (Yang, Yue-De); Wang, SJ (Wang, Shi-Jiang); Huang, YZ (Huang, Yong-Zhen) .Investigation of mode coupling in a microdisk resonator for realizing directional emission ,OPTICS EXPRESS,DEC 7 2009,17(25):23010-23015
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