Photonic crystal-structures for THz vacuum electron devices

Letizia, Rosa and Mineo, Mauro and Paoloni, Claudio (2015) Photonic crystal-structures for THz vacuum electron devices. IEEE Transactions on Electron Devices, 62 (1). pp. 178-183. ISSN 0018-9383

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Abstract

The technology of photonic crystals (PhCs) is investigated here to improve the performance of THz vacuum electron devices. Compared with conventional metallic waveguides, the PhC arrangement alleviates typical issues in THz vacuum electron tubes, i.e. difficult vacuum pumping process and assembling, and improves the input/output coupling. A slow-wave structure (SWS) based on a corrugated waveguide assisted by PhC lateral walls and the efficient design of a PhC coupler for sheet-beam interaction devices are demonstrated. Based on the proposed technology, a backward-wave oscillator (BWO) is designed in this paper. Cold parameters of the novel PhC SWS as well as 3-D particle-in-cell simulations of the overall BWO are investigated, obtaining more than 70-mW-peak output power at 0.650 THz for beam voltage of 11 kV and beam current of 6 mA.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Electron Devices
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
71435
Deposited By:
Deposited On:
27 Oct 2014 09:42
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Nov 2020 05:48