Abstract

In recent, the development of terahertz sources is still an emergent problem in THz science and technology. Many publications focus on the novel methods and mechanism to generate the terahertz waves. Among them, some investigations demonstrate that the combination of electronics, photonics and nanotechnology is a good promising way for the THz generation ^[1-2]. Some of our previous researched focused on the spoof surface plasmon polaritons (SPPs) in the subwavelength holes array (SHA) structure excited by free electron beam. It is proven that spoof SPPs can be efficiently excited and interacted with the electron beam to generate THz radiation.^[3-5]

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