International Journal of Terahertz Science and Technology
  TST >> Vol.12, No.1, March 2019: PP. 26-32
 

Coherent terahertz radiation from FabryCP└rot resonances via a special Smith-Purcell effect

Tao Zhao *, Min Hu, Renbin Zhong, Sen Gong and Shenggang Liu
Terahertz Research Center, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
* Email: forzhaotao@uestc.edu.cn

View Full Text: PDF

Abstract: A physical mechanism of multicolor coherent terahertz radiation is presented. We have found that, in a transmission metallic grating with deep enough slits, the multi-modes FabryCP└rot resonances in the slit cavity can be efficiently excited by an electron beam moving atop the grating, and then transformed into radiation via a special Smith-Purcell effect. The radiation is coherent and highly directional, which is essentially different from the ordinary Smith-Purcell radiation. The radiation power density is an order of magnitude higher. The radiation frequency can be tuned by adjusting the grating parameters and beam energy. Based on this mechanism, the coherent, tunable, intense, and miniature terahertz radiation sources can be developed.

Keywords: Terahertz radiation, FabryCP└rot resonances, Smith-Purcell effect

Received: 2018-9-20

Published: 2019-3-31

Cite this article:
Tao Zhao, Min Hu, Renbin Zhong, Sen Gong and Shenggang Liu; Coherent terahertz radiation from FabryCP└rot resonances via a special Smith-Purcell effect [J]. International Journal of Terahertz Science and Technology, 2019, Vol.12, No.1: 26-32.  DOI:10.11906/TST.026-032.2019.03.03

URL: http://www.tstnetwork.org/10.11906/TST.026-032.2019.03.03

 

 
 

Print | close

Copyright© 2008 Scinco Inc. All Rights Reserved
P.O.Box 6982, Williamsburg, VA 23188, USA var cnzz_protocol = (("https:" == document.location.protocol) ? "https://" : "http://");document.write(unescape("%3Cspan id='cnzz_stat_icon_2409046'%3E%3C/span%3E%3Cscript src='" + cnzz_protocol + "s4.cnzz.com/stat.php%3Fid%3D2409046%26show%3Dpic' type='text/javascript'%3E%3C/script%3E"));