Ultrathin transmission type terahertz circular polarization asymmetric focusing lens
A focusing lens and terahertz technology, applied in the field of terahertz lenses, can solve the problems of large terahertz lenses and difficulties in terahertz devices, and achieve the effects of large structure, easy integration, and low loss
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[0026] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0027] An ultra-thin transmissive terahertz circularly polarized asymmetric focusing lens of the present invention has a periodic structure, including three layers, wherein the first layer is a rectangular metal array layer 1, which is used to adjust the phase of the transmitted light so that it has a focusing phase and The incident circularly polarized light is converted into cross-polarized light; the second layer is a film substrate layer 3, which is used to connect the upper and lower two-layer structures; the third layer is a rectangular metal array layer 2 with a fixed rotation angle of 45°, which is used to break the structural symmetry sex. The rectangular metal array layer one and the rectangular metal array layer one above and below the thin film substrate layer 3 are prepared by photolithography or magnetron sputtering ...
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Abstract
Description
Claims
Application Information
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