Tuesday, September 22, 2015
Abstract-Experimental study of intense radiation in terahertz region based on cylindrical surface wave resonator
Periodical corrugations structured on a cylindrical conductor have cylindrical (CSWs), which are reflected at the corrugation ends and form a CSW-resonator. In this paper, intense in based on the CSW-resonator are reported. The CSW-resonators with upper cut off frequencies in the modern IEEE -band (110–300 GHz) are excited by a coaxially injected annular beam in a weakly relativistic region less than 100 kV. It is shown that there exists an oscillation starting energy for the CSW-resonator. Above the starting energy, very intense on the order of kW are obtained. The operation frequencies in the range of 166–173 GHz and 182–200 GHz are obtained using two types of CSW-resonator with the different corrugation amplitude. Electromagnetic properties of the CSW-resonator can be controlled by the artificial structure and may play an important role in high-intensity terahertz generations and applications.