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Volume 11
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10.3390/electronics11040664
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Article

Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam

by
Ruibin Peng
,
Hailong Li
*,
Yong Yin
,
Xiaotao Xu
,
Qingyun Chen
,
Liangjie Bi
,
Che Xu
,
Bin Wang
,
Xuesong Yuan
,
Ping Zhang
and
Lin Meng
The Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
*
Author to whom correspondence should be addressed.
Electronics 2022, 11(4), 664; https://doi.org/10.3390/electronics11040664
Submission received: 10 January 2022 / Revised: 10 February 2022 / Accepted: 18 February 2022 / Published: 21 February 2022
(This article belongs to the Section Microwave and Wireless Communications)
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Abstract

High current density and high brightness are critical factors for high-power and compact extended interaction oscillators (EIOs) which are operated in the terahertz (THz) waveband. The pseudospark-sourced (PS) sheet electron beam, which combines merits including high current density, a relatively big beam cross-section and no requirement for the external focusing magnetic field, is a good choice for application to high-frequency EIO. The pulse generated by the PS electron beam can last around tens of nanoseconds or even less, thus the EIO’s oscillation start-up time (OST) should be short enough. This paper researched how to reduce OST in an EIO driven by the PS sheet electron beam. The authors realized that the OST of EIO was very sensitive to the gap length under the equal period. The distribution of the electric field is optimized by adjusting the length of the gap. The strong electric field strength is conducive to the beam-wave interaction, and the OST is affected by the beam-wave interaction. When the gap length reaches a suitable value, the OST becomes the shortest. The simulation results showed the EIO’s shortest OST was 8 ns and the corresponding peak output power was 2 kW at 0.19 THz, while the current density was 500 A/cm2. When current density reached 10,000 A/cm2, the shortest OST could even be 1.9 ns.
Keywords: extended interaction oscillator (EIO); pseudospark-sourced (PS) electron beam; oscillation start-up time (OST); gap length; conductivity; efficiency; terahertz (THz) extended interaction oscillator (EIO); pseudospark-sourced (PS) electron beam; oscillation start-up time (OST); gap length; conductivity; efficiency; terahertz (THz)

Share and Cite

MDPI and ACS Style

Peng, R.; Li, H.; Yin, Y.; Xu, X.; Chen, Q.; Bi, L.; Xu, C.; Wang, B.; Yuan, X.; Zhang, P.; et al. Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam. Electronics 2022, 11, 664. https://doi.org/10.3390/electronics11040664

AMA Style

Peng R, Li H, Yin Y, Xu X, Chen Q, Bi L, Xu C, Wang B, Yuan X, Zhang P, et al. Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam. Electronics. 2022; 11(4):664. https://doi.org/10.3390/electronics11040664

Chicago/Turabian Style

Peng, Ruibin, Hailong Li, Yong Yin, Xiaotao Xu, Qingyun Chen, Liangjie Bi, Che Xu, Bin Wang, Xuesong Yuan, Ping Zhang, and et al. 2022. "Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam" Electronics 11, no. 4: 664. https://doi.org/10.3390/electronics11040664

APA Style

Peng, R., Li, H., Yin, Y., Xu, X., Chen, Q., Bi, L., Xu, C., Wang, B., Yuan, X., Zhang, P., & Meng, L. (2022). Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam. Electronics, 11(4), 664. https://doi.org/10.3390/electronics11040664

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