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A method for mid-infrared band stealth using metasurfaces

A metasurface, infrared band technology, applied in the field of optical imaging, can solve problems such as difficulty in processing stealth materials and inability to improve linearity

Active Publication Date: 2019-01-01
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problems mentioned in the background technology that the processing of stealth materials is difficult and the line cannot be improved.

Method used

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  • A method for mid-infrared band stealth using metasurfaces
  • A method for mid-infrared band stealth using metasurfaces
  • A method for mid-infrared band stealth using metasurfaces

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Embodiment Construction

[0027] According to the transmittance function of a given two-dimensional transparent object, the position of each device, the linearity of the nano-antenna and other information, as well as the actual optical system ( figure 1) parameter information, use the existing optical simulation program to calculate the complex amplitude distribution of the light field at the position of the flat material, and arrange the antenna array on the surface of the material according to the obtained complex amplitude distribution information to achieve the stealth effect; The simulation program creates a hypothetical object whose transmittance function is the reciprocal of the actual transmittance function of the object at the two-dimensional transparent object, and superimposes the spherical wave on the simulated hypothetical object light wave to make the object light converge on the superimposed The location of the structural material ensures that the metamaterial can record most of the infor...

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Abstract

The invention relates to the method for adopting metastructure surface to realize intermediate infrared invisibility. The method comprises steps of adopting a metastructure flat material surface, performing regulation and control on the amplitude and the phase on the incident light in order to control the information carried by the outgoing information so as to realize the invisibility of a two-dimension transparent object in a specific position, utilizing an existing optical simulation program to calculate the light field amplitude distribution of the position where the flat material is positioned according to the given two-dimension transparent object transmittance rate function and device positions, linearity information of a nanometer antenna and parameter information of an optical system which is practically constructed, and performing arrangement on the antenna array on the surface of the material according to the obtained complex amplitude distribution information in order to achieve the visibility effect. Compared with the traditional optical invisibility method, the invention is simple and fast and is low in complexity of manufacturing the device.

Description

technical field [0001] The invention belongs to the field of optical imaging, relates to the application of micro-nano photonics in the field of imaging, in particular to a novel metasurface stealth material applicable to the field of anti-detection. Background technique [0002] After the concept of metamaterials was proposed, optical cloaking became possible from fantasy. In 2006, British physicist Pendry and others wrote an article in "Science", proposing the idea of ​​using a metamaterial cover to achieve perfect stealth and establishing the Pendry formula; The progress of materials to achieve stealth has not been smooth. Most of the optical cloaking methods proposed so far have various problems. For example, the target object is wrapped with a spherical shell, and the method of transformation optics is used to regulate the propagation path of light in the spherical shell to eliminate the scattered light of the object. Although this method has the advantages of all an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G02B1/00G03F7/00
CPCG02B1/002G02B27/00G03F7/00
Inventor 王漱明张铭张钟秀孙倩阮宁娟王强张昊刘辉祝世宁
Owner NANJING UNIV
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