Double negative-metamaterial based Terahertz radiation excited by a sheet beam bunch

作者：Duan, Zhaoyun^*; Guo, Chen; Guo, Xin; Chen, Min

来源：Physics of Plasmas, 2013, 20(9): 093301.

DOI：10.1063/1.4820956

• REVERSED CHERENKOV RADIATION
• WAVE-GUIDE

We describe a new method to generate enhanced terahertz (THz) surface wave (SW) via its coupling with reversed Cherenkov radiation (RCR), excited by a sheet beam bunch which travels in a vacuum above an isotropic double negative metamaterial (DNM). The physical mechanism for the enhancement is that the DNM can support a RCR which can resonantly interact with a sheet electron beam bunch, resulting in an enhanced SW due to its coupling with the enhanced RCR. Numerical results show strong enhancement effect for the SW and RCR in the THz band. This enhanced THz radiation has potential applications to high-power THz radiation sources and Cherenkov detectors which require large signals.

• 出版日期2013-9
• 单位电子科技大学; MIT