Tunable terahertz resonator based on superstructure and its method for material analysis

Abstract

The invention relates to the field of Terahertz devices, and aims at providing a superstructure based adjustable terahertz resonant cavity and method using the resonant cavity for substance analysis.Existing research accomplishments of meta-materials can be used to realize qualitative and quantitative analysis on a substance to be detected. The superstructure based adjustable terahertz resonant cavity is characterized by comprising a fixed plate module, a movable plate module which can move relative to the fixed plate module and a spacing adjusting module which drives the movable plate module; the fixed plate module comprises a static plate support fixed at one end of a linear guide rail and a parallel plate supported by the static plate support and attached with a Terahertz super structure in the surface; the movable plate module comprises a moving plate support which can be located on the linear guide rail in a slidable manner via a displacement bench and a parallel plate supportedby the moving plate support and attached with a Terahertz super structure in the surface; and the spacing adjusting module comprises a screw rod arranged in parallel with the linear guide rail and a bidirectional rotation motor driving the screw rod.

Description

technical field [0001] The invention relates to the field of terahertz devices, in particular to an adjustable terahertz resonant cavity based on a superstructure and a method for analyzing substances thereof. Background technique [0002] Terahertz radiation refers to a section of electromagnetic waves with a frequency between 0.1THz and 10THz. Its photon energy is low, and it has good penetration for many dielectric materials and non-polar liquids. The transition between vibration levels of many polar macromolecules The transition between the and rotational energy levels is exactly in the terahertz frequency range. Therefore, terahertz waves are suitable for non-destructive detection and analysis of substances, and have great application potential in basic biological science, medicine and material science. However, due to the long wavelength of terahertz waves, there are still shortcomings such as low sensitivity and serious background signal interference in direct target...

AI Technical Summary

Problems solved by technology

The research and development of existing terahertz metamaterials mainly focus on the design of characteristic structure size and the selection of processing materials, etc., which effectively enhance the terahertz signal while weakening the specificity of terahertz detection; although some terahertz metamaterials have characteristic signal self-regulation function, but its production process is cumbersome and the stability is poor

Existing terahertz metamaterials are still far from meeting the needs of practical applications. Therefore, the development of structural devices with certain sensitivity and specificity to further improve the performance of existing terahertz metamaterials is essential for effectively improving the material analysis of terahertz waves. It is of great significance to broaden the application field of terahertz technology

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