Cherenkov infrared radiation source and free electron light source based on natural hyperbolic material

Abstract

The invention provides a natural hyperbolic material-based Cherenkov infrared radiation source and free electron light source, which comprises a natural hyperbolic material layer and an on-chip free electron emission source, and the on-chip free electron emission source comprises an on-chip electron source cathode and an on-chip electron source anode. In this way, the on-chip free electron emission source generates a stable electron beam to excite infrared Cherenkov radiation in the natural hyperbolic material. As the natural hyperbolic material is low in cost, easy to obtain and simple in preparation process, the natural hyperbolic material has remarkable advantages compared with an artificial hyperbolic metamaterial. Meanwhile, the natural hyperbolic material is easy to grow, good in stability and few in defect, and the influence of the material processing technology precision on the device performance can be avoided. And on the basis of a natural dielectric material, the intrinsic loss is lower, so that the corresponding device is higher in radiation power, higher in efficiency and smaller in heat emission. In addition, based on a natural crystal material, layout and arraying are easy to realize, and a possible scheme is provided for a high-power array integrated free electron light source.

Description

technical field [0001] The invention relates to the technical field of integrated light sources, in particular to a Cherenkov infrared radiation source and a free electron light source based on natural hyperbolic materials. Background technique [0002] Mid-Far infrared waves refer to electromagnetic waves with a wavelength of 2.5μm-25μm. Mid- and far-infrared waves can resonate with most molecules, have a strong thermal effect, and can be used for the analysis and identification of substances. In addition, the mid- and far-infrared wave has strong anti-diffraction ability and good penetration ability in the atmospheric environment, which is more conducive to long-distance transmission of information. Therefore, electromagnetic waves in the mid-far infrared to terahertz (THz) range are considered to be one of the important technologies in the future. [0003] Cherenkov radiation (Cherenkov Radiation, CR) refers to the electromagnetic radiation generated when the speed of f...

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Problems solved by technology

[0009] The object of the present invention is to provide a Cerenkov infrared radiation source and a free electron light source based on natural hyperbolic materials, to solve the problem of high cost, cumbersome process, and high cost of free electron radiation sources based on artificial hyperbolic metamaterials. Problems such as poor stability can greatly reduce device manufacturing costs and process complexity, and avoid the impact of material processing technology on device performance to the greatest extent.

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