Refractive index dependence of L3 photonic crystal nano-cavities
Refractive index dependence of L3 photonic crystal nano-cavities
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DOI：
10.1364/oe.15.014299
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发表时间：
2007-10-29
期刊：
影响因子：
3.8
通讯作者：
Lidzey, D. G.
中科院分区：
文献类型：
--
作者：
Adawi, A. M.;Chalcraft, A. R. A.;Lidzey, D. G.
我们使用导模展开方法，将L3光子晶体纳米腔的光学特性建模为光子晶体薄膜折射率n的函数。能带结构计算表明，TE类全带隙存在的折射率低至1.6的材料。这种腔的Q值随折射率呈超线性增加。通过调整腔侧孔的相对位置，Q因子作为光子晶体膜折射率n的函数在1.6至3.4的范围内被优化。在3000 - 8000的范围内的Q-因子预测从可见光范围内的无吸收材料与折射率在2.45和2.8之间。(C)2007年，美国光学学会。
We model the optical properties of L3 photonic crystal nano-cavities as a function of the photonic crystal membrane refractive index n using a guided mode expansion method. Band structure calculations revealed that a TE-like full band-gap exists for materials of refractive index as low as 1.6. The Q-factor of such cavities showed a super-linear increase with refractive index. By adjusting the relative position of the cavity side holes, the Q-factor was optimised as a function of the photonic crystal membrane refractive index n over the range 1.6 to 3.4. Q-factors in the range 3000- 8000 were predicted from absorption free materials in the visible range with refractive index between 2.45 and 2.8. (C) 2007 Optical Society of America.