【作者】 薛玉华；

【导师】 金飚兵；

【作者基本信息】 南京大学 ， 无线电物理， 2011， 硕士

【摘要】 太赫兹波(Terahertz,简称THz,1THz=1012Hz)是指在微波和红外光谱之间,频率范围为0.1-10THz的电磁波,在电磁波谱上是从电子学过渡到光学的特殊区域,也是由宏观经典理论过渡到微观量子理论的交叉区域,具有很高的科学研究和应用价值。由于长时间的研究空白,THz一直以来是电磁波研究中的盲区,被称作太赫兹空白。但是,由于电磁资源的有限性并伴随着通信事业的发展,目前的低频电磁资源已经分割完毕,才使得人们将研究方向转向更高频率；而个人电子产品等朝着轻便化、微小化的发展趋势,进一步推动了THz器件的研究和发展,这些也正是本文研究的重要现实基础。文章从引用THz SRRs (Split-ring resonators,开环谐振器,本文简称谐振器)的概念以及在CST模拟环境下的仿真设计为出发点。接着由单结构的谐振器提出了多结构谐振器的设想并佐以理论计算,并在CST软件下进行设计结构的模拟验证。继而进一步对由多结构谐振器构造THz滤波器的设想进行理论研究和参数讨论,接着进行了结构计算、设计,并完成了滤波器结构的CST仿真和微加工样品的制备。将制备好的样品在TDS (Terahertz time-domain spectroscopy,太赫兹时域光谱系统)系统下进行了测量。最后对实际测量结果和仿真结果进行了比较和分析,给出造成实验结果误差的工艺原因和系统原因,对以后的研究工作提供了参考和改进的方向。更多还原

【Abstract】 Being situated between infrared and microwave, terahertz wave is usually defined as the frequency from 0.1 THz to 10THz.With a great importance in scientific research and applications, terahertz is regarded as not only the transitional region between electronics and optics in the domain of spectroscopy, but also the cross area from the classical theory of macrophysics to microcosmic quantum mechanics. In a long time, terahertz is always a gap in the research of electromagnetism, so be called "the terahertz gap". But some research has to turn to higher frequency, because of the limitation of the electromagnetic resource and accompanying with the speedy development of the communications simultaneously. Furthermore, the resource of low frequency being occupied in current is the other reason. Otherwise, THz apparatus is also promoted by the trend of personal multimedia becoming smaller and more portable. In a word, all these factors quicken the research and developments of THz theory, and also be the essential meaning of this thesis. This thesis starts with the concept-THz SRRs (split-ring resonators), and simulates the structure with CST software. In next step, we make a research in multi-structures with theoretical calculations and CST simulations. On the basic of all the research mentioned ahead, we push out the research of THz filter, and also with theoretical analysis of the stimulation’s results. Finally, we pick up some structures, and make them laboratory samples with both general metallic and superconductive film by micro-fabricated experiments. When the samples are done, we measure them in TDS (Terahertz time-domain spectroscopy) system, and analyze reasons which bring forth the difference between measurements and simulation’s results. Hoping these analyses could improve the following researches.更多还原