4 August 2009 Simulation analysis of the antenna structure for terahertz generation
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Abstract
The research on terahertz (THz) fields exists for decades of years, because of its promising applications in imaging, medical diagnosis, security inspection, information communication, etc. There are many ways to generate THz pulses, such as photoconductive effect, optical rectification, photomixing, and so on. For the detection of THz pulses, two methods, free space electro-optic sampling (FS-EOS) and photoconductive (PC) sampling, can be normally used. In our previous experiments, the photoconductive effect has been utilized to generate THz radiation from a piece of semiconductor with antenna structure. The amplitude of THz signals was found to be proportional to the magnitude of the electric field. To understand this more clearly and try to get better THz signals, simulation analysis of the electric field in between the electrodes of the photoconductive antenna has been done, and a optimized antenna structure which will be more efficient than the parallel dipolar electrodes has been designed based on the simulation analysis.
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Jian Yang, Wen-hui Fan, Bing Xue, "Simulation analysis of the antenna structure for terahertz generation", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73851X (4 August 2009); doi: 10.1117/12.835803; https://doi.org/10.1117/12.835803
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