Analysis of the experimental Q factors (∼1 million) of photonic crystal nanocavities
Analysis of the experimental Q factors (∼1 million) of photonic crystal nanocavities
复制标题
DOI：
10.1364/oe.14.001996
复制
发表时间：
2006-03-06
期刊：
影响因子：
3.8
通讯作者：
Noda, S
中科院分区：
文献类型：
--
作者：
Asano, T;Song, BS;Noda, S
在这封信中，我们表明，最新的高Q值腔在二维光子晶体的Q因子，实验测得类似于1000000，是由损耗所确定的，由于在制造的结构中的缺陷，而不是由腔的设计。定量分析表明，主要的损耗源包括空气孔在腔内的倾斜，空气孔的内壁的粗糙度，在空气孔的半径的变化，和吸附材料的光吸收。我们相信，通过改进的制造技术，减少由于缺陷造成的损失，将在未来获得具有数百万量级的实验Q因子的腔。(c)2006年美国光学学会。
In this letter, we show that the Q factors of the latest high-Q cavities in two dimensional photonic crystals, measured experimentally to be similar to 1000000, are determined by losses due to imperfections in the fabricated structures, and not by the cavity design. Quantitative analysis shows that the dominant sources of loss include the tilt of air-holes within the cavity, the roughness of the inner walls of the air-holes, variation in the radii of the air-holes, and optical absorption by adsorbed material. We believe that cavities with experimental Q factors of the order of several millions will be obtained in the future by reducing the losses due to imperfections through improved fabrication techniques. (c) 2006 Optical Society of America.