NDLI: Study on the Generation of THz Waves in a Vacuum Electronic Device

Content Provider	IEEE Xplore Digital Library
Author	Ming-Chieh Lin Pu-Shih Lu Kuo-Hua Huang
Copyright Year	2006
Description	Author affiliation: Dept. of Phys., Fu Jen Univ. (Ming-Chieh Lin; Pu-Shih Lu; Kuo-Hua Huang)
Abstract	We proposed a vacuum electronic device based on field emission mechanism for the generation of THz waves in a previous work. The preliminary simulation results showed that an electronic efficiency up to 4% can be achieved with no external magnetic fields applied. However, the interaction mechanism is not clear. In the present work, the interaction mechanisms are studied. The MAGIC code is used to investigate the interactions between the electrons and the THz waves. To understand the interaction mechanism, the cathode has been trimmed to emit electrons. The simulation results show that the efficiency of the case corresponding to the trimmed cathode is higher than that of the original planar cathode. The interaction regions are located among the gaps between the cathode and the anode. The AC electric fields of the THz waves not only velocity-modulate the electron beam but also cause the density modulation of the field emission current. This pre-bunching effect provides the feedback loop as required by an oscillator
Starting Page	195
Ending Page	196
File Size	261623
Page Count	2
File Format	PDF
ISBN	1424401089
DOI	10.1109/IVELEC.2006.1666251
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Anodes Electron emission Electric fields Electron beams Optical modulation Feedback loop Oscillators Frequency Laboratories vacuum electronics THz waves field emission
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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