Role of interfaces in heterophotonic crystals for manipulation of photons
Role of interfaces in heterophotonic crystals for manipulation of photons
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DOI：
10.1103/physrevb.71.195101
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发表时间：
2005-05
影响因子：
3.7
通讯作者：
B. Song;T. Asano;Y. Akahane;S. Noda
中科院分区：
文献类型：
--
作者：
B. Song;T. Asano;Y. Akahane;S. Noda
通过在光子晶体中人为引入线缺陷和点缺陷来操纵光子对于各种科学和工程应用变得越来越重要。在这里，我们提出了一种概念，通过光子晶体中的点缺陷腔实现光子从线缺陷波导到自由空间的高提取。引入了具有不同晶格常数的异质光子晶体的配置，并且异质结构界面起着重要作用，充当特定能量的光子的近乎完美但具有选择性的镜子。此外，在所制造的装置中通过实验证明了提取效率的提高。
The manipulation of photons via artificially introduced line and point defects in photonic crystals is becoming important for various scientific and engineering applications. Here, we propose a concept for realizing high extraction of the photons from a line-defect waveguide to free space through a point-defect cavity in a photonic crystal. A configuration of heterophotonic crystals with different lattice constants is introduced, and the heterostructure interface plays an important role, acting as a nearly perfect but selective mirror for photons of a specific energy. Furthermore, the enhancement of extraction efficiency is experimentally demonstrated in the fabricated device.