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Method and system for generating polarization state of high-order Poincare sphere with robustness

A generation method and polarization state technology, applied in the field of information optics, can solve problems such as lack of robustness, difficulty in generating polarized beams, and easy damage by the external environment, and achieve wide application range, high polarization purity, and stable polarization state Effect

Active Publication Date: 2022-01-21
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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  • Method and system for generating polarization state of high-order Poincare sphere with robustness
  • Method and system for generating polarization state of high-order Poincare sphere with robustness

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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 polarization state of a high-order Poincare sphere with robustness. The method comprises the following steps of: loading a vortex phase on a completely coherent vector light beam, and then regulating and controlling the completely coherent vector light beam into left-handed circularly polarized light and right-handed circularly polarized light of the high-order Poincare sphere; synthesizing the left-handed circularly polarized light and the right-handed circularly polarized light into vector polarized light on the high-order Poincare sphere, and generating a polarization matrix of the high-order Poincare sphere through adjustment; reducing the spatial coherence of the polarized light, obtaining a random electromagnetic beam through shaping, and extracting polarization information in a polarization matrix to a spatial correlation tensor of the random electromagnetic beam; transmitting a random electromagnetic beam to a far field, in the far field, transferring polarization information from a space correlation tensor to a polarization matrix of the random electromagnetic beam, and obtaining a high-order Poincare sphere polarization state with robust characteristics. The problems that an existing high-order Poincare spherical polarized beam is difficult to generate, does not have the robust characteristic and is easily damaged by the external environment are solved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(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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