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Vector near-field light regulation and control device and method based on annular particle array

A control device and near-field light technology, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of scarcity of "manipulation" tools for vector near-field light, particle manipulation, and undeveloped application potential of near-field sensing. To achieve the effect of rich modulation means

Pending Publication Date: 2021-02-02
JIANGXI NORMAL UNIVERSITY
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Problems solved by technology

As far as the current development status is concerned, near-field light can achieve nanometer-level resolution, but its application potential in particle manipulation and near-field sensing has not been developed.
At present, there are not many effective tools for "manipulating" near-field light, and the "manipulation" tools for vector near-field light are even rarer

Method used

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  • Vector near-field light regulation and control device and method based on annular particle array
  • Vector near-field light regulation and control device and method based on annular particle array
  • Vector near-field light regulation and control device and method based on annular particle array

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0024] Based on the long-wave approximation and accurate electromagnetic field theory describing metal nanoparticles, the present invention proposes a particle array structure based on circular regular arrangement and a corresponding theoretical model, which accurately describes the modulation of the structure to the vector light field function, and change the structure by means of MEMS (MEMS refers to micro-electromechanical systems, MEMS can be used to change the structure of the particle array, for example, each particle is controlled by a MEMS, and these MEMS can rotate each particle synchronously, thereby The direction of the particles in the array is changed), and the tiny vector light fie...

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Abstract

The invention relates to a vector near-field light modulation device and method based on an annular particle array, which are characterized in that each particle in the array can be equivalent to an electric dipole by utilizing the periodically arranged particle array under the excitation of a vector light field with the same symmetry. Based on a classical electromagnetic theory, an array factor corresponding to a circular ring array is constructed, so that polarization of each particle is associated with an incident light field. On the basis, the near field of any array can be accurately calculated. Near-field distribution behind the array can be generated and modulated by changing the parameters of the array structure and the particles and the parameters of the excitation field.

Description

technical field [0001] The invention belongs to the technical field of vector light field control, and relates to a vector near-field light control device based on a circular particle array, and also relates to a vector near-field light control method based on a circular particle array. Background technique [0002] With the continuous development of nanophotonics and surface plasmonics, the scale of various optical components is getting smaller and smaller, and the requirements for the regulation of the light field are becoming more and more refined. Based on the need to precisely control the light field in a small range to change the intensity, polarization, and phase of the light field; various photonic devices and chips based on micro-nano microstructures have also been proposed and developed, including those based on metasurfaces. Various optical chips with various structures, various micro-nano antenna arrays, high-sensitivity sensors, optical microscopic imaging chips...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02F1/00
CPCG02F1/0126G02F1/0121G02F1/0009G02F1/0102Y02B20/40
Inventor 王贤平殷澄高晓雷袁文桑明煌
Owner JIANGXI NORMAL UNIVERSITY
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