Title :
Enhanced Smith-Purcell radiation in frequency independent dielectric grating
Author :
Bera, Anirban ; Barik, Ranjan K. ; Min, Sun-Hong ; Kwon, Ojoon ; Baek, InKuen ; Kim, Seontae ; Sattorov, Matlabjon A. ; Park, Gun-Sik
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea
Abstract :
In this paper we show that the Cerenkov radiation in artificial dielectric (metamaterial) noticeably increases Smith-Purcell radiation (SPR) intensity from the metamaterial grating if the two radiation condition is properly matched. We compare the radiated field intensity from lamellar metal grating and metamaterial grating and found that radiated field intensity of metamaterial grating is more intense than radiated field intensity of lamellar grating.
Keywords :
Cherenkov radiation; dielectric materials; metamaterials; Cerenkov radiation; artificial dielectric metamaterial; enhanced Smith-Purcell radiation; frequency independent dielectric grating; lamellar metal grating; metamaterial grating; radiated field intensity; radiation condition; Dielectrics; Electron beams; Frequency measurement; Gratings; Metals; Metamaterials; Surface waves; Cerenkov radiation Smith-Purcell radiation; Metamaterial; THz generation;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0188-6
Electronic_ISBN :
978-1-4673-0187-9
DOI :
10.1109/IVEC.2012.6262115
