Experimental Realization of a Magnetically Tunable Cavity in a Gyromagnetic Photonic Crystal  

作　　者：LIAN Jin FU Jin-Xin GAN Lin LI Zhi-Yuan 廉晋;傅晋欣;甘霖;李志远(Laboratory of Optical Physics,National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,P.O.Box 603,Beijing 100190)

机构地区：[1]Laboratory of Optical Physics,National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,P.O.Box 603,Beijing 100190

出　　处：《Chinese Physics Letters》2012年第7期122-125,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10904167;the National Basic Research Program of China under Grant No 2011CB922002.

摘　　要：We theoretically and experimentally study the cavity modes in a gyromagnetic photonic crystal (GPC).Because the permeability of gyromagnetic material relies on the dc magnetic field exerted upon it,the band gap of the GPC is supposed to be tunable.Based on this,it is expected that the cavity mode in the GPC is also tunable under the variation of dc magnetic fields.The relation between the frequency of the cavity mode and exerted dc magnetic field is theoretically investigated.Furthermore,we measure the frequency variation of the cavity mode in the GPC and demonstrate the tunable property of GPC cavity.

关 键 词：CRYSTAL CAVITY MODE 

分 类 号：TN2[电子电信—物理电子学]