光电导天线太赫兹波辐射特性研究进展

摘要

太赫兹科学技术已经成为当前电磁领域研究的热点,太赫兹波的产生是其关键技术,光电导天线(PCA)是目前产生宽频太赫兹波的重要手段.根据光电导天线太赫兹波的辐射特性的文献报道,对光电导天线产生太赫兹波的耦合输出效率、辐射场型、极化特性等研究进展做了较全面的评述,并针对光电导天线辐射特性对光电导天线应用的意义进行了探讨和展望,以期对光电导天线产生太赫兹波的研究和应用提供参考.%Terahertz(THz) science and technology has become a hotspot in electromagnetic field recently, in which the generation of terahertz wave is the key technology, and Photoconductive Antenna(PCA) is currently the typical approach for terahertz wave generation. The recent progresses of output coupling properties of THz wave generated by PCA are reviewed, including the output coupling efficiency, radiation patterns, as well as polarization properties. The significance of photoconductive antenna radiation characteristics research on photoconductive antenna application is discussed and prospected, which gives a guide for the research and applications of the THz wave generated by PCA.