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An optically tunable high-q terahertz absorber based on composite all-dielectric

An all-dielectric, composite technology, applied in the field of absorbers, can solve the problems of poor thermal stability, complex structure, high loss, etc., and achieve the effects of strong stability, simple structure and easy processing

Active Publication Date: 2020-12-29
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an optically adjustable high-Q terahertz absorber based on a composite all-dielectric, which solves the problems in the prior art that metals are easily oxidized, high loss, poor thermal stability, and complex structure

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  • An optically tunable high-q terahertz absorber based on composite all-dielectric
  • An optically tunable high-q terahertz absorber based on composite all-dielectric
  • An optically tunable high-q terahertz absorber based on composite all-dielectric

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The present invention is based on a composite all-dielectric optically adjustable high-Q terahertz absorber, such as figure 1 As shown, including a substrate 1 composed of polyimide and a resistivity of 1Ω·cm -1 ~10Ω·cm -1 The unit structure formed by the top layer 2 composed of P-type doped silicon is arranged according to N×N.

[0027] Among them, the cross-section of the substrate 1 is a square, the top layer 2 is a cylinder, the thickness of the substrate 1 is 15 μm to 30 μm, the radius of the top layer 2 is 105 μm to 125 μm, and the thickness is 70 μm to 95 μm. The central axis of the top layer 2 is located on the substrate At the intersection of the diagonals of the cross-sections of 1, the distance between the top layers 2 of adjacent unit structures is 300 μm to 350 μm.

[0028] The present invention is based on a composite ...

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Abstract

The invention discloses an optically adjustable high-Q terahertz absorber based on a composite all-dielectric, which includes a plurality of unit structures arranged in N×N, and each unit structure is composed of a square substrate composed of polyimide and a P A cylindrical top layer composed of doped silicon. The optically adjustable high-Q terahertz absorber based on the composite all-dielectric of the present invention has the advantages of simple structure, easy processing, not easy to be oxidized, strong stability and low loss.

Description

technical field [0001] The invention belongs to the technical field of absorbers, and relates to an optically adjustable high-Q terahertz absorber based on a composite all-dielectric. Background technique [0002] Terahertz waves, also known as terahertz rays, refer to electromagnetic waves with a frequency between 0.1 and 10 THz and a wavelength range of 30 μm to 3 mm, which is between infrared and microwave. The long wave coincides with the millimeter wave, and the short wave coincides with the infrared. It is precisely because of its special frequency position that the research of terahertz waves involves two categories of electronics and photonics. However, due to people's limited understanding of electromagnetic waves in this band, the development of terahertz wave technology is limited to a certain extent, making the research and application of electromagnetic spectrum present a "terahertz gap". However, with the advancement of science and technology, researchers have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/00
Inventor 王玥岳莉莎朱冬颖崔子健胡辉
Owner XIAN UNIV OF TECH