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A polarization detection device

A detection device and polarization technology, applied in the field of optics, can solve problems such as complex production process, unfavorable miniaturization and integration, and large volume

Active Publication Date: 2021-10-08
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional polarization detection device is composed of a series of polarization elements, which has the problems of large volume, complicated manufacturing process, and is not conducive to miniaturization and integration.

Method used

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Embodiment 1

[0022] Such as figure 1 As shown, the polarization detection device provided by Embodiment 1 of the present invention includes a prism 300 , a metasurface device 100 and an imaging device 200 . The metasurface device 100 is used to generate polarized beam splitting light 430 according to the polarization state of the light to be detected 400 , and the prism 300 reflects the polarized beam splitting light 430 to the imaging device 200 to analyze the polarization state of the light to be detected 400 .

[0023] In one embodiment, the prism 300 includes a light incident surface 500 and a beam splitting surface 700 arranged in parallel and at intervals, and a light reflecting surface 600 at a preset angle with the light incident surface 500, and the metasurface device 100 is arranged on the beam splitting surface 700 for use in The to-be-detected light 400 introduced by the light incident surface 500 is received, and the light reflection surface 600 is used for reflecting the pola...

Embodiment 2

[0032] Such as Figure 2-Figure 4 As shown, Embodiment 2 of the present invention is a further description of the metasurface device 100 on the basis of the polarization detection device in Embodiment 1 of the present invention.

[0033] Further, the metasurface device includes a substrate 140 and a superstructure functional region on the substrate 140, the superstructure functional region includes a metal reflective layer 130 and an anisotropic sub-wavelength structure layer, the substrate, the metal reflective layer and the anisotropic Anisotropic sub-wavelength structured layers are stacked sequentially. The metasurface device includes at least six superstructure functional regions, the anisotropic subwavelength structure layer includes a plurality of anisotropic subwavelength structures, and the anisotropic subwavelength structures in each superstructure functional region have a preset arrangement pattern, the arrangement pattern of the anisotropic subwavelength structure...

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Abstract

The embodiment of the invention discloses a polarization detection device. The polarization detection device includes a prism, a metasurface device and an imaging device, the metasurface device is used to generate polarized beam splitting light according to the polarization state of the light to be detected, and the prism reflects the polarized beam splitting light to the an imaging device to analyze the polarization state of the light to be detected. The embodiment of the present invention realizes the miniaturization and integration of the polarization detection device.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical technologies, and in particular, to a polarization detection device. Background technique [0002] As a degree of freedom of light, polarization is an important information carrier, but usually the obtained light intensity and spectral information does not contain the polarization information of the light field. Optical polarization measurement devices can measure the polarization state of the light field, and play an important role in many fields such as astronomy, remote sensing, communication, and medical treatment. [0003] The prior art usually uses Stokes parameters to characterize various polarization states of light. Experimentally, Stokes parameters can be determined by measuring the intensity of light. Therefore, most polarization measurement devices are based on the measurement of Stokes parameters. to achieve. [0004] However, the traditional polarization detection devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J4/04
CPCG01J4/04
Inventor 李贵新曹暾李阳刘萱唐宇涛
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA