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Transmission optical device based on artificial electromagnetic material

An artificial electromagnetic material, a technology for transmitting light, applied in optical components, optics, instruments, etc., can solve the problem of low polarization conversion efficiency, achieve strong linear polarization conversion dichroism, simple manufacturing, and significant development effects.

Inactive Publication Date: 2013-11-20
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on optical devices based on artificial electromagnetic materials is limited to single-wavelength, single-polarization state-one-way transmission, and the polarization conversion efficiency is not high

Method used

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  • Transmission optical device based on artificial electromagnetic material
  • Transmission optical device based on artificial electromagnetic material
  • Transmission optical device based on artificial electromagnetic material

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Embodiment 1

[0026] Embodiments of the present invention are as Figure 1-2 As shown, the dual-band unidirectional transmission optical device S includes a spacer layer 2 and metal material layers 1 and 3; the spacer layer is located between the metal material layers 1 and 3, and uses photosensitive polymer (PC403) to support the metal material layer 1 and 3, the thickness of which is t=50nm; the metal material layers 1 and 3 are respectively located on the surfaces of the two sides of the spacer layer, and each layer is composed of periodically arranged continuous double I-type metal material layer basic units, and the parameters of the metal material layer basic units are as follows , period ρ=1200nm, width w=200nm of metal line, length l1=495nm, l2=400nm, l3=990nm, b=210nm, t1=t2=50nm, where t1 is the thickness of metal material layer 1, t2 is The thickness of the metal material layer 3. The metal material layer 1 is the first metal structure layer, and the metal material layer 3 is th...

Embodiment 2

[0030] This embodiment provides a dual-band unidirectional transmission optical device, which is improved on Embodiment 1, and the overall structure in Embodiment 1 is placed on the infrared transparent substrate, that is, the infrared transparent medium substrate and the The spacer layers are respectively located on both sides of the first metal structure layer. The device can also achieve dual-band, dual-polarization (X and Y) unidirectional light transmission in the infrared band. Preferably, the material of the infrared transparent substrate is quartz glass.

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Abstract

The invention provides a transmission optical device based on an artificial electromagnetic material. The transmission optical device comprises a first metallic structural layer, a spacing layer and a second metallic structural layer, wherein the spacing layer is made from a transparent photosensitive polymer with a thickness in a 100nm (Nanometers) order of magnitude; the first metallic structural layer and the second metallic structural layer are respectively arranged on surfaces at the two sides of the spacing layer, both the first metallic structural layer and the second metallic structural layer are formed by basic units periodically arranged, and the thickness of either the first metallic structural layer or the second metallic structural layer is 20-60nm; and the basic units of the first metallic structural layer and the second metallic structural layer are in the same structural shape. The transmission optical device provided by the invention has strong linear polarization conversion characteristics in two wave bands and realizes the unidirectional transmission of the two wave bands.

Description

technical field [0001] The invention relates to an electromagnetic wave transmission control device, in particular to a transmission optical device based on artificial electromagnetic materials. Background technique [0002] Artificial electromagnetic metamaterials (Metamaterials) are artificially designed materials with sub-wavelength structures and extraordinary properties that natural materials do not have. Their unique and novel physical properties and attractive application prospects have attracted widespread attention from the international academic community. "Science" magazine named it one of the top ten scientific and technological achievements in 2003. Metamaterials triggered another wave of research on artificial new media after photonic crystals. [0003] "meta" in Metamaterials is equivalent to "beyond" in English, which means beyond. The scale of its structural units is on the sub-wavelength level, which can realize electromagnetic properties that natural mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/00
Inventor 史金辉徐轶群刘星辰朱正关春颖王政平
Owner HARBIN ENG UNIV
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