Terahertz Radiation Source Excited by Planar Multi-Electron Injection Graphene Subwavelength Integrated Grating

A terahertz radiation source and multi-electron injection technology, applied in the field of terahertz radiation sources, can solve the problems of lack of high-power integrated terahertz radiation sources, restrictions on the application of terahertz waves, and low interaction efficiency, so as to improve the interaction Efficiency, enhanced coupling, and increased output power

Active Publication Date: 2021-08-06
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the lack of high-power integrated terahertz radiation sources seriously restricts the application of terahertz waves in various fields.
Traditional vacuum electronic devices are the main way to generate high-power microwaves. However, due to high-frequency loss and low interaction efficiency, it is difficult to expand to the terahertz band.

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  • Terahertz Radiation Source Excited by Planar Multi-Electron Injection Graphene Subwavelength Integrated Grating
  • Terahertz Radiation Source Excited by Planar Multi-Electron Injection Graphene Subwavelength Integrated Grating
  • Terahertz Radiation Source Excited by Planar Multi-Electron Injection Graphene Subwavelength Integrated Grating

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only re...

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Abstract

A terahertz radiation source for a planar multi-electron injection excitation graphene sub-wavelength integrated grating and its application, the terahertz radiation source includes a casing for protecting the terahertz radiation source; the electron gun cathode is arranged on one of the openings of the casing The side is used to emit multiple electron beams; the grating structure is arranged inside the shell and has a graphene layer on the surface, and the plasmons on the surface of the graphene layer interact with the multiple electron beams to generate terahertz radiation; the partition plate is set Between two adjacent electron beams, it is used to isolate the electron beams; and an output port, which is arranged on the shell, is used to output terahertz radiation. The invention fundamentally enhances the coupling effect of the electron beam and the integrated high-frequency system, improves the beam-wave interaction efficiency, solves the problem of low interaction efficiency and output power faced by vacuum electronic devices when they develop to the terahertz band, and can greatly improve The output power of the terahertz radiation source is beneficial to the processing of engineering tubes and the realization of high-power terahertz sources.

Description

technical field [0001] The invention relates to the field of vacuum electronics terahertz technology, in particular to a terahertz radiation source for planar multi-electron injection excitation graphene sub-wavelength integrated grating. Background technique [0002] Terahertz wave (THz for short) refers to an electromagnetic wave with a frequency between 0.1-10 THz and a wavelength range of 3mm-30um. Terahertz waves are located between the far-infrared and submillimeter wave bands. They are a transitional field between electronics and photonics. They have unique electromagnetic wave properties, such as high transmittance, high resolution, low energy, coherence, and bandwidth. Terahertz technology is an innovative means to open up new fields of science at present, and has great application potential in biomedicine, material science, wireless communication, etc. [0003] Terahertz radiation source is a key device for the wide application of terahertz technology. The generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/00
CPCH01S1/005
Inventor 刘文鑫郭鑫赵超张兆传张志强
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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