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A method and device for real-time Stokes polarization measurement using DMD

A polarization and polarizer technology, applied in the field of real-time Stokes polarization measurement, can solve problems such as the inability to achieve stable and reliable dynamic SOP measurement, and achieve the effect of realizing real-time Stokes polarization measurement and solving real-time reconstruction problems.

Active Publication Date: 2021-04-20
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0006] In this context, the embodiment of the present invention expects to provide a method and device for real-time Stokes polarization measurement using DMD, to at least solve the problem that the existing Stokes polarization measurement technology cannot realize stable and reliable dynamic SOP measurement question

Method used

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  • A method and device for real-time Stokes polarization measurement using DMD
  • A method and device for real-time Stokes polarization measurement using DMD
  • A method and device for real-time Stokes polarization measurement using DMD

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Embodiment Construction

[0026] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present invention, rather than to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] The inventors have found that in vector light the spatial and polarization degrees of freedom are coupled in an inseparable manner, these are generally expressed as:

[0028]

[0029] Among them, ρ represents the polar diameter in polar coordinates, φ represents the polar angle, θ represents any angle from 0 to 90 degrees, E represents the electric field strength, l represents the topological number, i represents the imaginary number, represents a...

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Abstract

The invention provides a method and device for real-time Stokes polarization measurement by using DMD. The method is realized based on the device used in the method for real-time Stokes polarization measurement using a DMD; the device includes a half-wave plate, a q plate, a DMD loaded with a digital grating, a first lens, a filter, a second Lens, first linear polarizer, second linear polarizer, second quarter-wave plate, third linear polarizer, third lens, and CCD; linearly polarized Gaussian light is converted by half-wave plate and q-plate It is CV light, which is divided into four identical parts by DMD, and the four beams are used to measure the required total light intensity, light intensity in H direction, light intensity in D direction and light intensity in R direction. The above technology of the present invention can solve the real-time reconstruction problem of the dynamic SOP, and realizes the real-time Stokes polarization measurement by projecting the dynamic SOP onto the DMD.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical measurement, and more specifically, embodiments of the present invention relate to a method and device for real-time Stokes polarization measurement using a DMD. Background technique [0002] As a remarkable feature of light, polarization reflects the wave characteristics of light. This phenomenon was discovered as far back as the late 1600s, but it wasn't until Young's pioneering work in 1803 that it was related to transverse vibrations of the electric field. Many of the greatest thinkers of the 19th century, including Mallus, Brewster, Arago, and Fresnel, made enormous contributions to the understanding of polarization, but it was Stokes who laid the foundation for the characterization of polarization by introducing Any state of polarization is described by four quantities determined by intensity measurements, known as Stokes parameters. [0003] Essentially, the unknown field is p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J4/00
CPCG01J4/00G01J4/02
Inventor 卡梅隆·罗萨莱斯·古兹曼赵波胡晓博朱智涵高玮
Owner HARBIN UNIV OF SCI & TECH
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