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Enhancement effect type Kerr effect substrate

A technology of Kerr effect and enhancement, which is applied in optics, instruments, nonlinear optics, etc., can solve the problems of weak Kerr effect and unfavorable application of Kerr effect, and achieve increased operating distance, good application prospects, and enhanced Kerr effect. effect of effect

Inactive Publication Date: 2020-11-24
中山科立特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the Kerr effect of magnetic materials is weak, which is not conducive to the application of Kerr effect

Method used

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  • Enhancement effect type Kerr effect substrate
  • Enhancement effect type Kerr effect substrate
  • Enhancement effect type Kerr effect substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The invention provides an enhancement type Kerr effect substrate. like figure 1 As shown, the enhanced Kerr effect substrate includes a substrate 1 , a magnetic material layer 2 , holes 3 , and a noble metal thin film 4 . The magnetic material layer 2 is placed on the substrate 1 . The material of the substrate 1 is non-magnetic material, such as silicon dioxide. The material of the magnetic material layer 2 is a magnetic material, and the magnetic material layer 2 may be composed of one magnetic material, or may be composed of multiple magnetic materials. Specifically, the material of the magnetic material layer 2 is cobalt, bismuth iron garnet. The holes 3 are arranged on the surface of the magnetic material layer 2, and the holes 3 are arranged periodically. Specifically, the holes 3 are circular, and the holes 3 are arranged periodically in a square. The noble metal film 4 is disposed on the sidewall of the hole 3 . The material of the noble metal thin film 4 ...

Embodiment 2

[0026] On the basis of Embodiment 1, the holes 3 are in the shape of a one-dimensional wire grid, and the holes 3 are periodically arranged in a one-dimensional direction. The holes 3 are of equal width. That is, the entire substrate is a one-dimensional periodic structure. Compared with the circular holes 3 , the preparation of the wire-grid holes 3 is simpler and has lower requirements for experimental instruments.

[0027] Furthermore, the width of the hole 3 is greater than 20 nanometers and less than 200 nanometers, so as to form a standing wave and strong electric field distribution in the hole 3, enhance the interaction between the strong electric field and the magnetic material layer 2, and enhance the Kerr effect.

Embodiment 3

[0029] On the basis of embodiment 1 or 2, such as figure 2 As shown, the hole 3 does not penetrate the magnetic material layer 2 . The noble metal film 4 also covers the bottom of the hole 3 . Due to the reflection of the precious metal film 4 at the bottom of the hole 3, more energy will be gathered in the hole 3 to form a stronger electric field, which will enhance the interaction between the magnetic material and the local electric field, and increase the Kerr effect strength of the substrate.

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Abstract

The invention provides an enhancement effect type Kerr effect substrate which comprises a base, a magnetic material layer, holes and precious metal films; the magnetic material layer is arranged on the base, the holes are formed in the surface of the magnetic material layer, the holes are arranged periodically, and the precious metal films are arranged on the side walls of the holes. During application, incident light obliquely irradiates the magnetic material part, the incident light is coupled into the hole in the magnetic material part and is gathered in the hole, a strong electric field isformed in the hole, the strong electric field acts with the magnetic material layer, and the Kerr effect is enhanced. Due to the fact that the holes are formed in the magnetic material layer, the action distance between the magnetic material layer and light is increased, the Kerr effect of the substrate is enhanced, and the substrate has good application prospects in the field of Kerr effect application.

Description

technical field [0001] The invention relates to the application field of the Kerr effect, in particular to a reinforcement type Kerr effect substrate. Background technique [0002] The Kerr effect refers to the phenomenon that the polarization plane of the reflected light is rotated when the linearly polarized light is incident on the magnetic material. The Kerr effect has great application potential in magneto-optical storage, three-dimensional imaging, biological detection and other fields. Generally, the Kerr effect of magnetic materials is weak, which is not conducive to the application of Kerr effect. Contents of the invention [0003] In order to solve the above problems, the present invention provides a kind of enhancement type Kerr effect substrate, comprising: substrate, magnetic material layer, hole, noble metal thin film, magnetic material layer is placed on the substrate, hole is arranged on the surface of magnetic material layer, The holes are arranged perio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01G02F1/03G02B5/00
CPCG02B5/008G02F1/0136G02F1/0305
Inventor 不公告发明人
Owner 中山科立特光电科技有限公司