光电导天线产生太赫兹波的研究

肖健; 高爱华

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,陕西西安710048

详细信息

通讯作者:
肖健(1983-)，男，陕西咸阳人，西北大学物理学系硕士研究生，主要从事太赫兹波方面的研究工作。

中图分类号: TN29；O434.3
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出版历程
- 刊出日期: 2010-05-15

Terahertz generation with photoconductive antenna

XIAO Jian^{1
, ,},
GAO Ai-hua^1,2

1.
Department of Physics, Northwest University,Xi’an 710069,China;
2.
Xi’an University of Technology,Xi’an 710048,China

摘要

摘要: 研究了光电导天线产生太赫兹波的辐射特性，采用时域有限差分方法(FDTD)来模拟计算光电导偶极天线的辐射特性，并在计算机上以伪彩色图进行了图形显示。采用电偶极子天线模型，以0.1THz电磁波为例计算了天线辐射的特性参数，得到天线的辐射电阻为790，方向性系数为1.5。结果表明，光电导天线可以采用偶极天线的理论进行计算，可以通过提高电长度来增大辐射电阻，从而提高太赫兹的辐射功率。
- 光电子学 /
- THz波辐射特性 /
- 光电导天线 /
- 时域有限差分法
Abstract: The terahertz (THz) radiation properties of photoconductive antenna (PCA) were studied. The radiation characteristics of photoconductive antenna were simulated using FDTD; the results calculated were displayed on a computer in pseudo-color graphical. Using electric dipole antenna model and taking 0.1THz as an example, equatorial plane and the meridian plane of the antenna pattern were obtained, the antenna radiation resistance is 790 ohm, and directivity factor is 1.5. The results show that photoconductive antenna can be calculated with dipole antenna theory. Radiation resistance is increased by increasing the electrical length, and the power of terahertz radiation is increased as well.
- optoelectronics /
- terahertz wave radiation properties /
- photoconductive antenna /
- FDTD

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参考文献(1)

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