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Planar multi-electron-beam excitation graphene sub-wavelength grating-integrated terahertz radiation source

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

Active Publication Date: 2019-12-13
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.

Method used

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  • Planar multi-electron-beam excitation graphene sub-wavelength grating-integrated terahertz radiation source
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  • Planar multi-electron-beam excitation graphene sub-wavelength grating-integrated terahertz radiation source

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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

The invention relates to a planar multi-electron-beam excitation graphene sub-wavelength grating-integrated terahertz radiation source and application of the terahertz radiation source. The terahertzradiation source comprises a shell, an electron gun cathode, a grating structure, partition plates, and an output port; the shell is used for protecting the terahertz radiation source; the electron gun cathode is arranged on one side of the opening of the shell and is used for emitting multiple electron beams; the grating structure is arranged in the shell; a graphene layer is arranged on the surface of the grating structure; and the surface plasmon polaritons of the graphene layer interact with the multiple electron beams, so that terahertz radiation can be generated; the partition plates arearranged between every two adjacent electron beams and are used for isolating the electron beams; and the output port is arranged on the shell and is used for outputting the terahertz radiation. According to the terahertz radiation source of the invention, the coupling effect of the electron beams and an integrated high-frequency system is fundamentally enhanced; beam-wave interaction efficiencyis improved; the problems of the low interaction efficiency and low output power which confront the development of a vacuum electronic device towards a terahertz wave band are solved; the output powerof the terahertz radiation source can be greatly improved; and the processing of engineering tubing and the realization of a high-power terahertz source are facilitated.

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...

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Application Information

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Patent Type & Authority Applications(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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