非晶光子晶体中的光子局域化  

Photon localization in amorphous photonic crystal

作　　者：许兴胜[1] 陈弘达[1] 张道中[2] 

机构地区：[1]中国科学院半导体研究所光电子集成国家重点实验室,北京100083 [2]中国科学院物理研究所,北京100080

出　　处：《物理学报》2006年第12期6430-6434,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60345008;60377011;60537010)资助的课题

摘　　要：利用多重散射方法计算并研究了二维光子晶体随着无序度变化的光子局域化.通过控制方形单元随机旋转角度以控制光子晶体的无序度.研究发现,随着无序度的增加光子通带的透过率逐渐降低,而光子禁带中的透过率逐渐上升,即无序导致的局域化逐渐由光子带边向光子禁带中心和光子通带的中心扩展.而且光子通带中的平均透过率随无序度的增加呈e指数下降.The photon localization in disordered two-dimensional photonic crystal is studied by use of multiple-scattering method. The disorder degree can be controlled by adjusting the random rotating angle of the square cell. It is found that the transmission in the band decreases and that in the gap increases as the disorder degree increases, and localization induced by disorder will spread from the band gap edge to the band center and the gap center. Moreover, the mean transmission of the band will decrease exponentially with disorder increasing.

关 键 词：非晶 光子晶体 无序 光子局域 

分 类 号：O734[理学—晶体学]