基于合成超构材料的太赫兹调制器设计.pdf.pdf

第9卷第3期信息与电子工程 ,
2011 年 6 月 INFORMATION AND ELECTRONIC ENGINEERING Jun.,2011
文章编号:1672-2892(2011)03-0274-03
基于合成超构材料的太赫兹调制器设计
崔旭东,吴卫东,唐永建
(中国工程物理研究院激光聚变研究中心,四川绵阳 621900)

摘要:为了研究利用新型器件提高辐射控制的能力,利用合成超构材料演示了一种太赫兹有
源调制器的设计。该结构采用三维设计,除通过电压调节基底耗尽层载流子复合之外,还通过悬臂
结构调节该结构的等效电磁参数,最终达到有效调节器件响应的目的。研究表明该器件能够实时、
有效地对太赫兹辐射进行控制和操作。其对透射率的调制可达 75%,频移 THz,优于目前基于
二维平面方法设计的太赫兹调制器件。
关键词:超构材料;有源调制器;太赫兹辐射;等效电磁参数
中图分类号:TN761 文献标识码:A
A design of metamaterial-based THz modulator
CUI Xu-dong,WU Wei-dong,TANG Yong-jian
(Research Center for Laser Fusion,China Academy of Engineering Physics,Mianyang Sichuan 621900,China)
Abstract:To improve the capability of radiation control with new devices,an active modulator at
terahertz frequencies is designed with metamaterials. The structure under investigation is three
dimensional. By adjusting the bias voltage applied on the substrate,the carrier bination as well as
the effective ic parameters are effectively altered,and the modulation of the structure is
realized. The research shows that the modulator can control and operate THz radiation effectively and in
real-time. The transmission modulation reaches 75% with the frequency shift more than THz,which is
better than that of structures with two dimensional designs,providing a novel way to construct new types of
THz devices.
Key words:me