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E-shaped all-dielectric super-surface electromagnetic induction transparent resonance device

A technology of electromagnetically induced transparent and resonant devices, applied in the field of metamaterials, can solve the problems of low overall performance of sensitivity sensing, and achieve the effects of high sensitivity, slowing down the propagation speed, and high group refractive index

Active Publication Date: 2018-01-12
CHINA JILIANG UNIV
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Problems solved by technology

[0003] Although electromagnetically induced transparency can be realized in some all-dielectric resonators, its group refractive index n g (group of refractive index), as well as the sensitivity S (sensitivity) in refractive index sensing, and the overall performance of the sensor fOM (figure of merit) are all low

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  • E-shaped all-dielectric super-surface electromagnetic induction transparent resonance device
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  • E-shaped all-dielectric super-surface electromagnetic induction transparent resonance device

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] figure 1 and figure 2 The structure of an E-shaped all-dielectric metasurface electromagnetically induced transparent resonance device of the present invention is shown. like figure 1 and figure 2 As shown, the E-shaped all-dielectric metasurface electromagnetically induced transparent resonance device includes a base 2 and an E-shaped dielectric resonant unit 1 located on the surface of the base 2. The E-shaped dielectric resonant unit 1 includes a horizontal part and a vertical part, and the whole is in the shape of a letter "E" . Both the horizontal dielectric strip and the vertical dielectric strip are rectangular strips (that is, the cross-sections of the vertical dielectric strip and the horizontal dielectric strip are both rectangular) as the preferred embodiment, that is, the cross-section of the vertical dielectric strip and the horizont...

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Abstract

The invention discloses an E-shaped all-dielectric super-surface electromagnetic induction transparent resonance device. The device comprises a substrate and E-shaped dielectric resonance units whichare located on the surface of the substrate and distributed in a two-dimensional periodicity mode, the substrate is made from dielectric materials, and the dielectric constant of the substrate is larger than 0 and smaller than or equal to 5; the dielectric constant of the E-shaped dielectric resonance units is larger than or equal to 6. Accordingly, the group refractive index can be increased, andthe slow light effect can be achieved. Meanwhile, the device can be used for high-sensitivity refractive index sensing devices.

Description

technical field [0001] The invention relates to an all-dielectric metasurface electromagnetically induced transparent (EIT-like) resonance device, belonging to the technical field of metamaterials. Background technique [0002] Electromagnetically induced transparency arises from interference between energy levels in polyatomic systems. The EIT-like effect of metamaterials refers to the phenomenon of electromagnetically induced transparency achieved by simulating atomic systems through metamaterials. In recent years, metasurface-like electromagnetically induced transparency has become the focus in the field of nanophotonics due to its ability to generate resonances with high quality factors. Resonance with high quality factor can be applied in low-loss slow-light devices and high-sensitivity optical sensors. A high group refractive index can more effectively slow down the speed of light propagating in the medium, realize the slow light effect, open up a new direction for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/10G01N21/41
Inventor 洪治韩冰心刘建军
Owner CHINA JILIANG UNIV
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