A high‐performance mode multiplexer based on hybrid spoof surface plasmon polariton and substrate integrated waveguide

Zhang, Xuewei; Liu, Shaobin; Zheng, Xinyuan; Liao, Kun

doi:10.1002/mmce.23475

Cited by 3 publications

(1 citation statement)

References 41 publications

(83 reference statements)

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“…Based on above studies on SSP dispersion on the roofed metallic grating, a high-power THz radiation source based on the effective excitation of the bounded SSP mode by an injected electron beam is modeled and studied via particle-in-cell simulations based on the finite-difference-time-domain (FDTD) algorithm [ 35 , 36 , 37 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. The software studio is also used for some traditional vacuum electronic devices such as backward-wave oscillators (BWO) [ 51 ], travelling-wave tubes (TWT) [ 52 ], klystrons [ 53 , 54 ], and so on.…”

Section: Thz Ssp Excitation On the Roofed Metallic Grating By Electro...mentioning

confidence: 99%

Excitation of Terahertz Spoof Surface Plasmons on a Roofed Metallic Grating by an Electron Beam

Liu,

Zhang,

Wang

et al. 2024

Micromachines

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In this paper, both fundamental SSP modes on a roofed metallic grating and its effective excitation of the bounded SSP mode by an injected electron beam on the structure are numerically examined and investigated in the THz regime. Apart from the bounded SSP mode on the metallic grating with open space, the introduced roofed metallic grating can generate a closed waveguide mode that occupies the dispersion region outside the light line. The closed waveguide mode shifts gradually to a higher frequency band with a decreased gap size, while the bounded SSP mode line becomes lower. The effective excitation of the bounded SSP mode on this roofed metallic grating is also implemented and studied by using a particle-in-cell simulation studio. The output SSP power spectrums with various gap sizes by the same electron beam on this roofed metallic grating are obtained and analyzed. The simulation results reveal that the generated SSP spectra show a slight red shift with a decreased gap size. This work on the excitation of the SSP mode using an electron beam can benefit the development of high-power compact THz radiation sources by utilizing the strong near-field confinement of SSPs on metallic gratings.

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Section: Thz Ssp Excitation On the Roofed Metallic Grating By Electro...mentioning

confidence: 99%

Excitation of Terahertz Spoof Surface Plasmons on a Roofed Metallic Grating by an Electron Beam

Liu,

Zhang,

Wang

et al. 2024

Micromachines

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show abstract

A compact and narrow-band bandpass filter based on substrate integrated waveguide and spoof surface plasmon polaritons for millimeter-wave applications

Zhang,

Yao,

et al. 2024

AEU - International Journal of Electronics and Communications

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Electronic excitation of high-order spoof surface plasmons on metallic grating at terahertz frequencies

Liu,

Wang,

Sun

et al. 2024

Physics of Plasmas

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High-order spoof surface plasmon (SSP) mode on corrugated metallic surfaces can find many interesting applications, such as in imaging, sensing, transmission and enhanced radiation source, etc. In this paper, an efficient excitation method of the high-order SSP mode by using an injected electron beam on the uniform rectangular metallic grating is proposed and investigated numerically. Based on the matched wave momentum between the SSP mode and the electron beam, both the fundamental and high-order SSP modes can be excited on the structure by using a single injected electron beam. Numerical simulation results indicate that the maximum electric field intensity of the generated high-order SSP mode is about two orders higher than that of the fundamental SSP mode. In addition, the peak power of the excited high-order SSP mode is almost two times that of the fundamental SSP mode power by the same energy electron beam, which demonstrates the obvious advantage of the high-order SSP electronic excitation approach compared to the previous fundamental SSP mode excitation on the structure. The central working frequency of high-order SSP power spectrum is about three times that of the fundamental SSP power spectrum. Moreover, the influences of the injected electron beam energy on the excited SSP power spectrum are analyzed specifically. It is shown that the generated SSP power spectrum demonstrates a blue shift with the decreased working voltage of the electron beam simultaneously, with its peak power increasing. However, the working bandwidth is narrowed with decreased beam voltage, which further reveals its working mechanism of presented electronic excitation of the SSP mode. The presented studies provide a new method to excite a high-order SSP mode on the metallic grating, which can find some potential applications in high-sensitivity sensing, deep sub-wavelength waveguide, and many others in terahertz spectra.

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A high‐performance mode multiplexer based on hybrid spoof surface plasmon polariton and substrate integrated waveguide

Cited by 3 publications

References 41 publications

Excitation of Terahertz Spoof Surface Plasmons on a Roofed Metallic Grating by an Electron Beam

Excitation of Terahertz Spoof Surface Plasmons on a Roofed Metallic Grating by an Electron Beam

A compact and narrow-band bandpass filter based on substrate integrated waveguide and spoof surface plasmon polaritons for millimeter-wave applications

Electronic excitation of high-order spoof surface plasmons on metallic grating at terahertz frequencies

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