Artificial surface plasmon coupler based on transmission type phase gradient super surface

An artificial surface plasmon and phase gradient technology, which is applied in the field of polariton to achieve the effects of easy preparation, simple structure, and resolution of beam width sensitivity

Inactive Publication Date: 2017-10-20
AIR FORCE UNIV PLA
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[0005] The embodiment of the present invention provides an artificial surface plasmon coupler based on

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  • Artificial surface plasmon coupler based on transmission type phase gradient super surface
  • Artificial surface plasmon coupler based on transmission type phase gradient super surface
  • Artificial surface plasmon coupler based on transmission type phase gradient super surface

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] refer to figure 1 , the artificial surface plasmon coupler based on the transmission-type phase gradient metasurface provided in the embodiment of the present invention, the coupler includes a phase gradient metasurface (1) and a square patch array (2), and the phase gradient The metasurface (1) is located directly above the square patch array (2), and there is a certain distance between the two. Through optimization, the optimal distance ...

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Abstract

The invention discloses an artificial surface plasmon coupler based on a transmission type phase gradient super surface and relates to the technical field of artificial surface plasmon. The coupler includes a phase gradient super surface and a square paster array. The phase gradient super surface is disposed exactly above the square paster array and a clearance is arranged between the phase gradient super surface and the square paster array. Through adjusting the length of square pasters, the dispersion relation of intrinsic artificial surface plasmon can be adjusted, so that artificial surface plasmon intrinsic wave vector on the square paster array is approximately equal to the wave vector of excited state surface vector in a specific bandwidth. In this way, surface wave generated on the phase gradient super surface is resonant coupled to the square paster array and finally intrinsic artificial surface plasmon of broadband is acquired through coupling and the intrinsic artificial surface plasmon propagates in a long range with low loss on the square paster array. The conversion efficiency of that propagation waves convert to artificial surface plasmon is improved. The invention provides technical means for designing and manufacturing high performance artificial plasmon equipment.

Description

technical field [0001] The invention relates to the technical field of plasmons, in particular to an artificial surface plasmon coupler based on a transmission-type phase gradient metasurface. Background technique [0002] Surface plasmon polaritons (Surface Plasmon Polaritons, SPPs) are hybrid electromagnetic modes that are highly localized at the interface of two media, produced by the strong coupling of electromagnetic evanescent fields and electronic oscillations. Due to its strong surface localization properties, surface plasmons have many exotic electromagnetic properties, such as subwavelength transmission properties, field enhancement properties, slow wave properties, phase mutation properties, etc. Because of these novel properties, surface plasmons have important potential applications in new microwave / optical devices, super-resolution imaging, high-sensitivity sensing, etc., and have become one of the hot issues in domestic and foreign academic circles in recent y...

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Application Information

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IPC IPC(8): H01Q15/00
Inventor 马华陈红雅屈绍波王甲富李勇峰
Owner AIR FORCE UNIV PLA
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