Title :
A study of free standing diamond films for mm TWTs
Author :
Ding, Ming Q. ; Li, Lili ; Bai, Guodong ; Hu, Yingfu ; Feng, Jinjun
Author_Institution :
Vacuum Electron. Nat. Lab., Beijing Vacuum Electron. Res. Inst., Beijing, China
Abstract :
We have studied the process of MPCVD diamond films for mm TWTs. Diamond films were found in a (111) preferential orientation, having an excellent crystalline structure with no SP2 content. Free standing diamond film disks were fabricated for mm TWT windows, with a cutoff wavelength 225 nm, and a transmission ≥70% (λ ≥ 2.5 μm).
Keywords :
diamond; millimetre wave devices; plasma CVD; travelling wave tubes; MPCVD diamond films; crystalline structure; free standing diamond film disks; microwave plasma chemical vapour deposition; mm TWT; wavelength 225 nm; Diamond-like carbon; Magnetic materials; Optical device fabrication; Optical films; Optical imaging; Photonic crystals; diamond films; mm TWTs; optical transmission;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2011 IEEE International
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-8662-5
DOI :
10.1109/IVEC.2011.5747038
