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Goos-Haenchen shift amplifier, preparation method and amplification method of Goos-Haenchen shift amplifier

A displacement amplifier and displacement technology, which is applied in the field of precision measurement and optical sensing, can solve the problems of demanding equipment, unfavorable integration, and insufficient portability, and achieve the effects of convenient production, strong economy, high functionality, and high flexibility

Pending Publication Date: 2022-03-01
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although some reports have achieved the enhancement and regulation of the Gus-Hanchen shift, the construction of a new type of beam or new optical structure may lead to a system that is too complex, not portable enough, high in cost, demanding in equipment, and unfavorable for integration

Method used

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  • Goos-Haenchen shift amplifier, preparation method and amplification method of Goos-Haenchen shift amplifier
  • Goos-Haenchen shift amplifier, preparation method and amplification method of Goos-Haenchen shift amplifier
  • Goos-Haenchen shift amplifier, preparation method and amplification method of Goos-Haenchen shift amplifier

Examples

Experimental program
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Effect test

Embodiment 1

[0034] like figure 1 As shown, the present embodiment provides a Goose-Hanchen displacement amplifier comprising two media with different refractive indices. The upper medium is a light-transmitting glass prism, and the lower medium is a GH displacement generating device, usually a metal sheet.

[0035] Scrape a concavity on the right end of the upper glass prism. The concave surface faces the radial direction of the displacement amplifier obliquely to the upper right, the size of the concave surface is no more than 50% of the whole medium, and it is located at the right end of the displacement amplifier.

[0036] The material of the glass prism can be borosilicate glass with a refractive index of 1.47 or quartz glass with a refractive index of 1.458.

[0037] The thickness of the opaque metal flake may be 30-70nm, preferably the thickness of the metal flake is 45nm. The optional material of the metal sheet is gold, copper or nickel, and the preferred material of the metal ...

Embodiment 2

[0043] like figure 2 As shown, this embodiment provides a Gus-Hanchen displacement amplifier. The difference from Embodiment 1 is that the glass prism structure used in the upper layer is replaced by a glass sheet structure. The advantage is that the space occupancy of the device can be further compressed, and the disadvantage is that the incident The angles are not as precise as in Example 1, and the amplification of the Goos-Hanchen displacement while pursuing miniaturization is not so efficient.

[0044] Score a concavity on the right end of the upper glass sheet. The concave surface faces radially upward of the displacement amplifier, the size of the concave surface does not exceed 50% of the whole medium, and is located at the right end of the displacement amplifier.

[0045] The material of the glass sheet can be borosilicate glass with a refractive index of 1.47 or quartz glass with a refractive index of 1.458.

[0046]The optional glass flakes have a base length of ...

Embodiment 3

[0051] like image 3 As shown, this embodiment provides a Gus-Hanchen displacement amplifier, which realizes miniaturization on the basis of the above-mentioned embodiment 2, and further compresses the space occupancy of the device. The disadvantage is that the device has a requirement for the incident position of light relatively harsh.

[0052] A concave surface is engraved on the upper glass sheet from the upper left end to the lower right end; the concave surface faces radially upward of the displacement amplifier and is located at the upper right end of the displacement amplifier.

[0053] The material of the glass sheet can be borosilicate glass with a refractive index of 1.47 or quartz glass with a refractive index of 1.458.

[0054] Optional glass flakes have a base length of 20-100 mm, and preferred glass flakes have a base length of 25 mm.

[0055] The optional glass flakes have a base width of 20-50mm, and the preferred glass flakes have a base width of 25mm.

[...

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Abstract

The invention discloses a Goos-Haenchen shift amplifier, a preparation method and an amplification method thereof. The shift amplifier comprises an upper medium and a lower medium with different refractive indexes, the upper layer is a light-transmitting glass prism, and the lower layer is a GH displacement generating device; a concave surface is carved at the right end of the upper-layer glass prism, the concave surface faces the radial inclined right upper part of the displacement amplifier, the size of the concave surface does not exceed 50% of that of the whole glass prism, and the concave surface is positioned at the right end of the displacement amplifier. When light enters the glass prism or the glass sheet to be propagated, the thin layer in contact with the GH displacement generation device can generate reflected light; plasma resonance occurs on the surface when light is reflected on the surface of the GH displacement generation device, Goos-Hanchen displacement is greatly increased, and meanwhile, the light passes through the concave surface of the structure again after being reflected, so that the Goos-Hanchen displacement is amplified again. Double amplification of Goos-Hanchen displacement is achieved, displacement observation and measurement are more convenient, the preparation cost is low, portability is high, and flexibility is high.

Description

technical field [0001] The invention relates to the technical fields of optical sensing and precision measurement, in particular to a Gus-Hanchen displacement amplifier, a preparation method and an amplification method thereof. Background technique [0002] In 1947, two scientists, Gus and Hanshin, discovered that when light undergoes total reflection, the reflected beam will undergo a small lateral displacement at the incident point. The displacement of this section is extremely small, usually only a few wavelengths long, which makes this phenomenon very difficult to observe and measure, and also greatly hinders the progress of scientific research in this field. For the past seven decades, researchers have been working on how to manipulate and enhance the Goose-Hanchen beam so that it can be easily measured and observed. In recent years, with the continuous progress of a large number of researches on the Gouss-Hanchen shift, there are more and more methods and ways to regu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02G02B5/04
CPCG01B11/02G02B5/04
Inventor 李波瑶林钰培孙敬华
Owner DONGGUAN UNIV OF TECH
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