Investigation of a wide band watt level backward wave oscillator based on ridged double staggered grating waveguide

Feng Linqi; Yue Lingna; Xu Jin; Cai Jinchi; Yin Hairong; Wei Yanyu; Yin Pengcheng; Wang Wenxiang; Deng Zhengrong

doi:10.11884/HPLPB202335.230150

Volume 35 Issue 12

Nov. 2023

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Feng Linqi, Yue Lingna, Xu Jin, et al. Investigation of a wide band watt level backward wave oscillator based on ridged double staggered grating waveguide[J]. High Power Laser and Particle Beams, 2023, 35: 123001. doi: 10.11884/HPLPB202335.230150

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Feng Linqi, Yue Lingna, Xu Jin, et al. Investigation of a wide band watt level backward wave oscillator based on ridged double staggered grating waveguide[J]. High Power Laser and Particle Beams, 2023, 35: 123001. doi: 10.11884/HPLPB202335.230150

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Investigation of a wide band watt level backward wave oscillator based on ridged double staggered grating waveguide

doi: 10.11884/HPLPB202335.230150

School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

Received Date: 2023-05-29
Accepted Date: 2023-08-28
Rev Recd Date: 2023-10-23

Available Online: 2023-10-27

Publish Date: 2023-12-15

Abstract

Abstract

A novel ridged double staggered grating (RDSG) slow wave structure (SWS) is put forward to develop the wide-band and high-power terahertz radiation source for meeting the demand of thriving field of terahertz. The high frequency structure of backward wave oscillator (BWO) is designed and optimized, meanwhile high frequency characteristics of RDSG and double staggered grating (DSG) are simulated and compared, indicating that RDSG has a higher ‘cold’ bandwidth and more prominent interaction impedance when their phase velocity are adjusted to basically the same. PIC simulation results show that, ridged double staggered grating backward wave oscillator has a tunable bandwidth more than 175 GHz, and it can generate more than 1.1 W output power which is 34%～42% higher than BWO implemented with conventional DSG in the frequency range around 1 THz.
- terahertz,
- wide-band and high-power backward wave oscillator,
- novel slow wave structure,
- ridged double staggered grating waveguide,
- simulation

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References(17)

References

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