飞秒激光触发光电导天线产生太赫兹波的研究

›› 2010, Vol. 23 ›› Issue (3): 7-.

飞秒激光触发光电导天线产生太赫兹波的研究

肖健1,高爱华1,2

(1西北大学物理学系,陕西西安710069;2西安理工大学应用物理系,陕西西安710048 ）

出版日期:2010-03-15 发布日期:2010-05-12
通讯作者: 肖健（1983-）,男,硕士研究生。研究方向:太赫兹波。
作者简介:肖健（1983-）,男,硕士研究生。研究方向:太赫兹波。
基金资助:
西北大学研究生创新教育基金资助项目（08YSY05;08YZZ40）

Investigation of Generation of Terahertz with the Photoconductor Triggered by the Femo Second Laser Pulse

Xiao Jian1,Gao Aihua1,2

(1Department of Physics,Northwest University,Xian 710069,China;
2Department of Applied Physics,Xian University of Technology,Xian 710048,China)

Online:2010-03-15 Published:2010-05-12

摘要/Abstract

摘要：

研究了光电导天线产生太赫兹波的辐射特性,利用麦克斯韦方程及其边界条件,计算了近远场的电场强度;采用电磁波时域有限差分方法（FDTD）,在Matlab系统软件中,用C语言编写程序计算光电导偶极天线的辐射太赫兹波的空间电磁场分布,并在计算机上以伪彩色图形显示,这种电磁场的可视化结果为天线的设计和改进提供了直观的物理依据。

关键词: THz波, 光电导天线, 时域有限差分法

Abstract:

The terahertz (THz) radiation properties of the photoconductive antenna (PCA) are studied in order to improve the THz radiation efficiency.Maxwells equations and boundary conditions are adopted to calculate the field intensity of the near or far field.Using the finitedifference timedomain electromagnetic method and c language program in the matlab software,the spatial electromagnetic field distribution radiation of photoconductive dipole antenna is calculated and displayed on the computer in a pseudocolor graph.The visualization of the electromagnetic field provides a physical basis for the intuitive design and improvement of the antenna.

Key words: terahertz wave;photoconductive antenna;FDTD

中图分类号:

O4343

肖健, 高爱华. 飞秒激光触发光电导天线产生太赫兹波的研究[J]. , 2010, 23(3): 7-.

XIAO Jian, GAO Ai-Hua. Investigation of Generation of Terahertz with the Photoconductor Triggered by the Femo Second Laser Pulse[J]. , 2010, 23(3): 7-.