Electromagnetic radiation source

An electromagnetic radiation source and electronic technology, applied in the field of electromagnetic radiation source, can solve the problems that the frequency and intensity of electromagnetic radiation are difficult to reach the ideal level, and the radiation intensity decreases, and achieve the effect of high radiation frequency and high radiation intensity

Active Publication Date: 2017-04-26
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

However, the radiation intensity of this electromagnetic radiation source decreases sharply with the increase of the frequency multiple, and its effective radiation frequency is usually only twice the frequency of electron clusters. Therefore, the electromagnetic radiation frequency and radiation of the traditional Smith-Purcell free electron laser Difficult to reach the desired level of strength

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0043] Secondly, the present in...

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Abstract

The invention provides an electromagnetic radiation source. An electronic gun is used to generate an annular electron beam. A first raster, which is close to one side of the electronic gun, makes the annular electron beam generated by the electronic gun generate a prebunch. A second raster, which is close to one side of a collector corresponding to the electronic gun, is used to make clustered electron groups generate coherent peculiar Smith-Purcell radiation, and a radiation frequency is 5-6 times of an electron group cluster frequency. The radiation frequency is in a Terahertz frequency range. An electromagnetic radiation intensity of the peculiar Smith-Purcell radiation is one to two orders of magnitudes higher than a common Smith-Purcell radiation intensity. Therefore, by using the radiation source of the invention, an electromagnetic wave of the Terahertz frequency range, which possesses a high radiation frequency and a high radiation intensity, can be generated.

Description

technical field [0001] The present invention relates to the field of vacuum electronics, and more particularly to a source of electromagnetic radiation. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency of 0.1-10 THz and a wavelength of 3000-30 microns. It coincides with millimeter waves at long wavelengths and with infrared at short wavelengths. Terahertz waves occupy a very special position in the electromagnetic spectrum. The study found that terahertz waves, as a high-frequency electromagnetic wave, are safer than X-rays, and have broad application prospects in many fields such as life sciences, material sciences, high-speed communications, and national security. It is a hot research topic that researchers at home and abroad are generally concerned about . [0003] Electromagnetic radiation sources used to generate this band are fundamental devices for the development of related technologies. In the prior art, the Smith-Pur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J3/14H01J3/02
CPCH01J3/02H01J3/14
Inventor 刘维浩陆亚林梁林波王琳贾启卡
Owner UNIV OF SCI & TECH OF CHINA
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