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Closed periodic metal grating SSP terahertz filter and tuning method

A metal grating and terahertz technology, applied in the terahertz field, can solve the problems of periodic metal grating interference, difficult to achieve dynamic tuning, etc., and achieve the effect of increasing local attachment effect, simple structure, and reducing interference and influence

Active Publication Date: 2020-06-09
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem in the prior art that periodic metal grating SSP transmission is easily disturbed by the external environment, and it is difficult to realize dynamic tuning

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  • Closed periodic metal grating SSP terahertz filter and tuning method
  • Closed periodic metal grating SSP terahertz filter and tuning method
  • Closed periodic metal grating SSP terahertz filter and tuning method

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0035] Such as figure 1 and figure 2 As shown, a closed periodic metal grating SSP terahertz filter provided by the embodiment of the present invention includes a rectangular periodic metal grating 2 and a metal cover plate 1, wherein, as figure 1 As shown, the periodic metal grating 2 includes a plurality of rectangular grooves with the s...

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Abstract

The invention relates to the technical field of terahertz, in particular to a closed periodic metal grating SSP terahertz filter and a tuning method. The terahertz filter comprises a metal cover plateand a periodic metal grating of a rectangular structure, wherein the metal cover plate is a flat plate with constant thickness and is arranged right above the periodic metal grating in parallel at aninterval, and the height of the metal cover plate can be flexibly set according to the central frequency and the bandwidth of a stop band of the terahertz filter. Compared with the prior art, the closed periodic metal grating SSP terahertz filter provided by the invention can realize tuning of SSP mode transmission characteristics on the surface of the periodic metal grating only by changing theheight of the metal cover plate, and has the advantages of simple and compact structure and dynamic tunability.

Description

technical field [0001] The invention relates to the technical field of terahertz, in particular to a closed periodic metal grating SSP terahertz filter and a tuning method. Background technique [0002] Periodic metal gratings, as a typical electromagnetic structure, have been extensively studied and applied in the entire electromagnetic wave band, and metal gratings with rectangular structures have attracted more attention because of their simple structure, convenient processing, and large heat load. Especially in recent years, with the emergence and continuous development of artificial electromagnetic structures and metamaterials, the artificial surface plasmon (Spoof surface plasmons, SSP) transmission mode of periodic metal gratings has attracted extensive attention of researchers. SSP is a special electromagnetic mode locally attached to the surface of periodic metal structures, which has a strong near-field enhancement effect and local resonance effect. SSP is regarde...

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Application Information

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IPC IPC(8): H01P1/20G02B5/20
CPCG02B5/204H01P1/20
Inventor 刘永强孙金海李粮生殷红成
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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