Highly confined mode above the light line in a two-dimensional photonic crystal slab

被引：16
|
作者：
Xu, Tao [1 ]
Wheeler, Mark S. [1 ]
Nair, Selvakumar V. [2 ]
Ruda, H. E. [1 ,2 ]
Mojahedi, Mohammad [1 ]
Aitchison, J. Stewart [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
[2] Univ Toronto, Ctr Nanotechnol, Toronto, ON M5S 3E4, Canada
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 24期
基金：
加拿大自然科学与工程研究理事会;
关键词：
electric fields; microcavities; microwave spectra; optical losses; optical materials; photonic crystals; Q-factor;
D O I：
10.1063/1.3046124
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We found that certain modes above the light line can satisfy total internal reflection in a two-dimensional photonic crystal slab, resulting in negligible vertical leakage. A heterogeneous cavity utilizing such a mode was designed and constructed for the microwave spectrum. Numerical calculations show the mode has a quality factor (Q) of 6x10(5) neglecting the material loss and 7600 including it. The measured Q (9000), resonance frequency, and mode pattern agreed well with the calculation. The mode has more than 50% of electric field energy in void space and is promising to have stronger interaction with materials introduced there.
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页数：3
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