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Direct-view type method and device for generating any column vector polarized light based on vortex half-wave plate

A half-wave plate and column vector technology, applied in the field of spatial polarization beam shaping, can solve the problems of inability to withstand high-energy laser beams, low SLM area utilization, and no cost-effectiveness, and achieve high energy utilization and conversion efficiency. The effect of simple structure, easy operation and control

Active Publication Date: 2021-06-29
中国人民解放军陆军炮兵防空兵学院
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Problems solved by technology

However, the dual SLM method is not cost-effective, and the split-screen method has the disadvantage of low SLM area utilization. In addition, the SLM method has low conversion efficiency due to diffraction effects, and cannot withstand high-energy laser beams due to the liquid crystal material.

Method used

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  • Direct-view type method and device for generating any column vector polarized light based on vortex half-wave plate
  • Direct-view type method and device for generating any column vector polarized light based on vortex half-wave plate
  • Direct-view type method and device for generating any column vector polarized light based on vortex half-wave plate

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Embodiment Construction

[0069] The specific embodiment of the present invention is given in conjunction with the accompanying drawings, and the technical solution of the present invention is described in detail.

[0070] Such as figure 1 As shown, the beam generation system includes a laser 1, a horizontal polarizer 2, a beam expander 3, a first λ / 2 wave plate 4, a first λ / 4 wave plate 5, a first vortex half-wave plate 6, a second A λ / 2 wave plate 7 , a second λ / 4 wave plate 8 , a second vortex half-wave plate 9 and a beam expander 10 . figure 1 The components in the dotted line box are not placed in the system first, and then selected to be placed and taken out according to the needs of generating light beams. The laser light generated by the laser 1 is guaranteed to become horizontal linearly polarized light after passing through the horizontal polarizer 2, and then through the beam expander 3 to realize beam amplification, and then the polarization direction of the linearly polarized light is a...

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Abstract

The invention discloses a direct-view type method and device for generating any column vector polarized light based on a vortex half-wave plate, a light beam emitted by a laser device becomes horizontal line polarized light after passing through a horizontal polarizer, the light beam is amplified after passing through a beam expander, the polarization direction of the linear polarized light is adjusted through a rotatable first [lambda] / 2 wave plate, a cylindrical vector polarized light beam is generated after passing through the vortex half-wave plate, multiple types of cylindrical vector light beams can be achieved by rotating the first [lambda] / 2 wave plate, and at the moment, the types of the cylindrical vector light beams can be increased by the light beam through the rotatable second [lambda] / 2 wave plate. A first [lambda] / 4 wave plate and a combination of a second [lambda] / 4 wave plate and a second vortex wave plate are arranged in the device, vortex light beams and cylindrical vector vortex light beams can be generated respectively, in addition, through the combination of vortex half-wave plates, a novel vortex half-wave plate can be generated, and then more cylindrical vector light beams are generated. Any column vector light beam can be generated by rotating and placing the wave plate, the structure is simple, light reflection and deflection do not exist, and energy utilization and conversion rate are high.

Description

technical field [0001] The present invention relates to the technical field of spatially polarized beam shaping, in particular to a direct-view method and device for generating arbitrary cylindrical vector polarized light based on a vortex half-wave plate. The method converts a linearly polarized beam into an arbitrary cylindrical vector polarized beam, such as: Radial polarized light, angularly polarized light, anti-vortex radial polarization (ARP) mode beam (anti-vortex radial polarization (ARP) mode beam, referred to as reverse radially polarized light), anti-vortex angular polarization mode beam (anti-vortex azimuthalpolarization (AAP) mode beam, referred to as anti-angularly polarized light), high-order cylindrical vector polarized beam, vortex beam and cylindrical vector vortex beam, etc. Background technique [0002] Cylindrical vector polarized (cylindrical vector, CV) beams have attracted widespread attention because of their cylindrically symmetric intensity distri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B27/09G02B27/28
CPCG02B27/0012G02B27/09G02B27/28
Inventor 祁俊力汪卫华史博张辉沈延安邓海飞浦文靖程德胜单会会麻晓敏张连庆王申浩芦伟温佳起郑进江黄玲玲
Owner 中国人民解放军陆军炮兵防空兵学院
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