Terahertz metamaterial

Abstract

The invention discloses a terahertz metamaterial, and the metamaterial comprises a substrate, and an electromagnetic loss resonance ring structure disposed on the substrate. A function of terahertz wave electromagnetic modulation is achieved through the adjustment of the size and sheet resistance of the electromagnetic loss resonance ring structure. According to the invention, the electromagnetic loss resonance ring structure is disposed on the substrate, and the function of terahertz wave electromagnetic modulation is achieved through the adjustment of the size and sheet resistance of the electromagnetic loss resonance ring structure, thereby simplifying the processing steps of a terahertz device, reducing the processing cost, and enabling the terahertz technology to be widely used in the field of electromagnetic communication.

Description

technical field [0001] The invention relates to the field of electromagnetic communication, in particular to a terahertz metamaterial. Background technique [0002] Terahertz band (Terahertz, THz) refers to electromagnetic waves with a frequency in the range of 0.1THz-10THz, and its wavelength covers 3mm-30μm, which is also called THz radiation, submillimeter wave or T-ray. Terahertz is between millimeter wave and infrared in the electromagnetic spectrum. Compared with the two bands of millimeter wave and infrared, terahertz is not widely used in the field of electromagnetic communication. [0003] The reason for the limited application of terahertz is that it is restricted by terahertz sources, detectors and functional devices, so it has not been applied on a large scale; in addition, because the terahertz wavelength is very short, this will lead to its Compared with microwave devices, the device size is much smaller, that is to say, its size may be on the order of a few p...

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Problems solved by technology

[0003] The reason for the limited application of terahertz is that it is restricted by terahertz sources, detectors and functional devices, so it has not been applied on a large scale; in addition, because the terahertz wavelength is very short, this will lead to its Compared with microwave devices, the device size is much smaller, that is to say, its size may be on the order of a few percent of microwave devices, so the processing of terahertz devices will become very difficult and costly

[0004] Therefore, in the existing technology, most terahertz devices are obtained by photolithography, but this will cause the problem of small sample size and low yield, which obviously will greatly restrict the development of terahertz technology. In-depth research and wide application

[0005] In view of the processing difficulties and high prices of terahertz devices in related technologies, which are not conducive to the application of terahertz technology in the field of electromagnetic communication, no effective solutions have been proposed yet.

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