二维反铁磁光子晶体的体模带分布研究  

Study on Bulk Mode Bands Distribution in Two Dimensional Antiferromagnetic Photonic Crystals

作　　者：刘芮志 荆佳顺 于浩东 吴首男 于浩男 塔金星[1] Liu Ruizhi;Jing Jiashun;Yu Haodong;Wu Shounan;Yu Haonan;Ta Jinxing(School of Science,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学理学院,哈尔滨150040

出　　处：《黑龙江科学》2022年第24期30-33,共4页Heilongjiang Science

基　　金：东北林业大学大学生创新创业训练计划项目(202210225162);中央高校基本科研业务费专项资金项目(2572016BB07)。

摘　　要：构建了一种二维反铁磁光子晶体,通过波动方程得到了体系的体模等式。以氟化亚铁/硒化铅光子晶体为例进行数值计算,发现在零外磁场反铁磁共振频区附近,体系存在具有群速为负的高频和低频两个小体模连续区。通过外磁场的调控,不改变体系结构和尺寸情况下,负群速体模带的中心频率位置与宽度可以被设计,研究结果可为开发新型慢光光子器件提供理论依据。A two-dimensional antiferromagnetic photonic crystal is constructed, and the bulk mode equation of the system is obtained via the wave equation. Through taking Ferrous Fluoride/Lead Selenide Photonic Crystal as an example, numerical calculation is done. It is found that there are two continuous regions of small bulk modes with negative group velocity, high frequency and low frequency near the antiferromagnetic resonance frequency region of zero external magnetic field. The central frequency position and width of the negative group velocity bulk mode band can be designed by adjusting the external magnetic field without changing the structure and size. The research results can provide theoretical basis for new slow light photonic devices.

关 键 词：二维 反铁磁光子晶体 体模带 

分 类 号：O434.3[机械工程—光学工程]