异型微腔本征模式分析

量子电子学报 , 2007, 24(1): 27-31. doi: 10.3969/j.issn.1007-5461.2007.01.006

异型微腔本征模式分析

蔡佳星 ^1, , 仇善良 ^2, , 李永平 ^3, , 韩正甫 ^4,

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关键词：光电子学 , 异型腔 , 有限时域差分 , 微腔 , 回音壁模

Analysis of eigenmodes for asymmetric resonant micro-cavities

微腔模式特性的研究是微腔各种应用的基础.采用时域有限差分方法(FDTD)可以获得微腔模式的频谱响应特性.通过对平面平行腔的验证,发现FDTD方法可以获得同理论较吻合的结果.对平面圆腔的回音壁模(WGM)腔模特性的分析表明;这种腔体尺寸同波长相当的谐振腔具有较好的选模特性.通过腔边界由两个带变形参数的圆弧所构成的平面异型微腔在不同变形参数下模式特性的细致研究,则发现通过改变腔形可以达到改善腔模模式特性的目的,这表明优化腔形设计是优化腔性能的一条可行思路.

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