Title :
High-Power Tunable Terahertz Radiation by High-Order Harmonic Generation
Author :
Gong, Huarong ; Travish, Gil ; Xu, Jin ; Wei, Yanyu ; Feng, Jinjun ; Gong, Yubin
Author_Institution :
Nat. Defense Key Lab. of Technol. for High Power Microwave Vacuum Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
We propose a new type of terahertz (THz) radiation source based on the electron beam-wave interaction. A high-order harmonic-generation process was introduced to a traveling-wave tube (TWT)-like device-the high-harmonic TWT or HHTWT. The scheme is configured as a frequency multiplier and amplifier with W-band (millimeter wave) input signals and THz output power. Simulations show that operation at the seventh harmonic is possible and other order harmonic waves were suppressed. The output frequency can be tuned continuously over a 30-GHz bandwidth with more than 20-dBm output power. The peak output power is about 30 dBm at 707 GHz. The output frequency is insensitive to beam voltage jitter.
Keywords :
amplifiers; frequency multipliers; harmonic generation; terahertz waves; travelling wave tubes; HHTWT; THz output power; TWT-like device; W-band input signal; beam voltage jitter; electron beam-wave interaction; frequency 707 GHz; frequency multiplier; harmonic waves; high-harmonic TWT; high-order harmonic generation; high-power tunable terahertz radiation; traveling-wave tube; Educational institutions; Electron beams; Electron tubes; Frequency modulation; Harmonic analysis; Power generation; Folded waveguide (FWG); frequency conversion; millimeter wave; terahertz (THz) wave; traveling-wave tube (TWT);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2012.2227751
