1维等离子体光子晶体截止频率的研究  

Study on the cut-off frequency of 1-D plasma photonic crystals

作　　者：孔祥鲲[1] 王永顺[1] 杨宏伟[2] 刘少斌[3] 

机构地区：[1]解放军镇江船艇学院基础部,镇江212003 [2]南京农业大学理学院,南京210095 [3]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《激光技术》2011年第1期126-129,136,共5页Laser Technology

基　　金：国家自然科学基金项目(60971017)

摘　　要：为了研究1维等离子体光子晶体的截止频率随介质材料的介电常数、等离子体频率、等离子体与介质材料厚度的比例系数以及入射角度的变化关系,采用传输矩阵方法,分析了1维等离子体光子晶体的色散关系,给出了截止频率的变化规律。结果表明,等离子体光子晶体不能完全截止任何小于等离子体频率的电磁波;随着入射角度的增加,截止频率逐渐趋向于等离子体频率;通过调节以上各参量,可实现等离子体光子晶体的可调谐功能。这与单纯等离子体截止频率相比,具有其鲜明特点。In order to study the effect of the radio of micro plasma layer width to dielectric width, dielectric constant of the dielectric material, the plasma frequency and the incident angle on the eut-off frequency, the dispersion relation of one-dimension plasma photonic crystals was analyzed by means of transfer matrix method and the change rule of the cut-off frequency was put forward. The results show that plasma photonic crystals can＇ t completely cut off the electromagnetic wave, whose frequency is less than the plasma frequency. The cutoff frequency comes close to the frequency of plasma when the incident angle of electromagnetic wave increases. The function of modulation for plasma photonie crystals can be realized by adjusting the index mentioned above.

关 键 词：光学器件 等离子体光子晶体 传输矩阵法 截止频率 

分 类 号：O53[理学—等离子体物理]