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A Bloch Surface Plasmon Optical Device with Enhanced Goos-Hanchen Effect on Graphene

An optical device and graphene technology, applied in the field of optics, can solve the problem of small Gus-Hanshin displacement of graphene, and achieve the effect of enhancing interaction

Active Publication Date: 2022-05-10
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the graphene Goos-Hanchen shift is smaller in the existing structure, and to provide a Bloch surface polar optical device that significantly enhances the graphene Goos-Hanchen effect

Method used

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  • A Bloch Surface Plasmon Optical Device with Enhanced Goos-Hanchen Effect on Graphene
  • A Bloch Surface Plasmon Optical Device with Enhanced Goos-Hanchen Effect on Graphene
  • A Bloch Surface Plasmon Optical Device with Enhanced Goos-Hanchen Effect on Graphene

Examples

Experimental program
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Embodiment 1

[0058] Example 1, Bloch surface polariton optics with 10 periodic multilayer dielectric material layers

[0059] figure 2 It is a schematic diagram of the structure of the Bloch surface polariton optical device described in Example 1. image 3 is a partial enlarged view of the Bloch surface polariton optics described in Example 1. 201 is the cladding layer, n c is its refractive index; 202 is the graphene layer of the defect layer, n g is its refractive index, d g is its thickness; 203 is the high-refractive-index dielectric cut-off layer of the defect layer, n t is its refractive index, d t is its thickness; 204 is the multi-layer dielectric material layer of the 10-period multi-layer film structure element; 205 is the low-refractive index medium layer of the multi-layer dielectric material layer of the multi-layer film structure element, n l is its refractive index, d l is its thickness; 206 is the high-refractive-index dielectric layer of the multi-layer dielectric ...

Embodiment 2

[0067] Example 2: Bloch surface polariton optics with 8 periodic multilayer dielectric material layers

[0068] Figure 8 It is a schematic diagram of the structure of the Bloch surface polariton optical device described in Example 2. Figure 9 is a partial enlarged view of the Bloch surface polariton optics described in Example 2. 801 is the cladding layer, n c is its refractive index; 802 is the graphene layer of the defect layer, n g is its refractive index, d g is its thickness; 803 is the high-refractive-index cut-off layer of the defect layer, n t is its refractive index, d t is its thickness; 804 is the multi-layer dielectric material layer of the 8-period multi-layer film structure element; 805 is the low-refractive index medium layer of the multi-layer dielectric material layer of the multi-layer film structure element, n l is its refractive index, d l is its thickness; 806 is the high-refractive-index dielectric layer of the multi-layer dielectric material lay...

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Abstract

The invention discloses a Bloch surface polariton optical device which enhances the Gus Hanshin effect of graphene. By adjusting the refractive index or thickness of the cladding layer or a certain layer structure, the input light is incident on the surface of the Bloch surface polariton optical device at a specific angle, and the significantly enhanced optical field is confined to the graphene surface, enhancing the relationship between graphene and light. The interaction of , excites Bloch surface polaritons, and realizes a violent jump in the reflection phase, thereby obtaining a significant enhancement of the Gus-Hanchen shift effect on the graphene surface. The proposed optical device is of great significance for realizing graphene's potential application fields, including optical switches in optical communication, optical storage and other optoelectronic devices, and optical sensing detection in the sensing field.

Description

technical field [0001] The invention relates to the technical field of optics, in particular to a Bloch surface polariton optical device that enhances the Gus Hanshin effect of graphene. Background technique [0002] When the light beam is reflected at the interface, when the reflectivity function of the interface (including intensity and phase) is not constant, a series of non-specular reflection phenomena may occur. For example, the center of the beam may have a certain lateral displacement between the incident point and the exit point of the reflection interface. This phenomenon was first confirmed experimentally by Goos and Hanchen, so it is called the Goos Hanchen effect. As a typical effect of non-specular reflection, the Gus-Hanchen phenomenon has become a research hotspot since its discovery, and has been intensively studied for decades. It is found that the occurrence of the Gus Hanhin phenomenon is caused by the jump of the angle-dependent phase term in the refle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/00
CPCG02B5/008
Inventor 孔维敬孟范强倪晓昌
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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