Electromagnetic Wave Detection Via Interaction With Non-Uniform Distributed Space Charge In Vacuum

The detection of electromagnetic radiation of subterahertz (up to 0.14 THz) and IR regions obtained from the interaction with non-uniformly distributed space charge in the interelectrode space of a vacuum triode with plane electrodes is experimentally demonstrated. The dependence of the detected sig...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 350; no. 1; pp. 12010 - 5
Main Authors Haroyan, H S, Makaryan, A H, Movsisyan, K M, Tadevosyan, V R
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2012
Subjects
Aircraft detection
Approximation
Current voltage characteristics
Electric fields
Electrodes
Electromagnetic radiation
Electromagnetic waves
Electrostatic fields
Mathematical analysis
Physics
Space charge
Triodes
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Summary:The detection of electromagnetic radiation of subterahertz (up to 0.14 THz) and IR regions obtained from the interaction with non-uniformly distributed space charge in the interelectrode space of a vacuum triode with plane electrodes is experimentally demonstrated. The dependence of the detected signal from the direction of wave polarization and vacuum triode's current characteristics has been investigated. A simple theoretical model, according to which, the detection is due to nonlinearity associated with the non-uniform distribution of electrons along the electrostatic field direction, has been proposed to explain the mechanism of detection. The measured detection characteristics reasonably agree with theoretical results, based on low-level signal approximation and assuming that the current-voltage characteristic of the used devices (triodes) obeys the law of 3/2.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/350/1/012010