A Robust High-Order Poincaré Sphere Polarization State Generation Method and System

A generation method and polarization state technology, applied in the field of information optics, can solve the problems of lack of robustness, easy to be destroyed by the external environment, difficult to generate polarized beams, etc., to achieve a wide range of applications, stable polarization state, and high polarization purity. Effect

Active Publication Date: 2022-03-11
SUZHOU UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to provide a robust high-order Poincaré spherical polarization generation method and system to solve the problem that existing high-order Poincaré spherical polarization beams are difficult to generate, do not have robust characteristics, and are easily damaged by the external environment. sabotage problem

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  • A Robust High-Order Poincaré Sphere Polarization State Generation Method and System
  • A Robust High-Order Poincaré Sphere Polarization State Generation Method and System
  • A Robust High-Order Poincaré Sphere Polarization State Generation Method and System

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Embodiment

[0153] This embodiment provides a high-order Poincaré spherical polarization state generation system, based on the above-mentioned high-order Poincaré spherical polarization state generation method, taking the petal-shaped polarization state of the third-order Poincare sphere with robust characteristics as an example, the specific generation process as follows:

[0154] Such as image 3 As shown, the laser 1 adopts a helium-neon laser with a wavelength of 532 nanometers, which can emit vertically polarized laser light. A linear polarizer 2 whose transmission axis is at an angle of 45° to the vertical direction is placed behind the laser 1 to weaken the Adjust the light intensity and adjust the polarization direction of the beam to form an angle of 45° with the vertical direction. The device between the first spatial light modulator 3 and the second half-wave plate 14 is used to generate a third-order Poincaré sphere , The polarization matrix of the polarization state; The...

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Abstract

The invention discloses a method and system for generating a robust high-order Poincaré spherical polarization state, comprising the following steps: loading a fully coherent vector beam with a vortex phase and then adjusting it to a left-handed circular polarization of a high-order Poincaré sphere light and right-handed circularly polarized light; synthesize left-handed circularly polarized light and right-handed circularly polarized light into vector polarized light on a high-order Poincaré sphere, and generate a high-order Poincare sphere by adjusting the polarization matrix; reduce polarized light The spatial coherence of the random electromagnetic beam is obtained through shaping, and at the same time, the polarization information in the polarization matrix is ​​extracted into the spatial correlation tensor of the random electromagnetic beam; the random electromagnetic beam is transmitted to the far field, and in the far field, the polarization information is obtained from the spatial correlation Tensors are transferred to the polarization matrix of random electromagnetic beams, resulting in higher-order Poincaré spherical polarization states with robust properties. The invention solves the problems that the existing high-order Poincare spherical polarized light beam is difficult to generate, does not have robust characteristics, and is easily damaged by the external environment.

Description

technical field [0001] The invention relates to the field of information optics technology, in particular to a method and system for generating a robust high-order Poincaré spherical polarization state. Background technique [0002] Polarization is an important degree of freedom for beam regulation. Early studies on polarized light mainly focused on the simplest scalar polarized light. The polarization of scalar light is consistent at different positions in space, such as linearly polarized light, circularly polarized light, and elliptically polarized light. Wait. The full study of scalar polarized light beams also gave birth to 3D glasses, automotive filter glass and other equipment, which greatly improved people's quality of life. In order to better represent the polarization of scalar beams, in 1892 the French scientist Poincaré established the Poincaré sphere, he mapped linear polarization in different directions, elliptical polarization and circular polarization in dif...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01
CPCG02F1/0136
Inventor 董震孙曦谭世磊陈亚红王飞蔡阳健
Owner SUZHOU UNIV
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