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Device converting non-polarized laser to linearly polarized laser

A technology of laser devices and linearly polarized light, applied in optics, optical components, instruments, etc., can solve the problems of difficult laser processing and low conversion efficiency

Inactive Publication Date: 2019-05-03
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a device for converting non-polarized laser to linearly polarized laser, which is used to solve the problem of low conversion efficiency and high difficulty in processing the remaining laser when traditional polarizers are used to convert non-polarized laser to linearly polarized laser in the prior art. The problem

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  • Device converting non-polarized laser to linearly polarized laser
  • Device converting non-polarized laser to linearly polarized laser
  • Device converting non-polarized laser to linearly polarized laser

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Embodiment 1

[0035] figure 1 A structural schematic diagram of Embodiment 1 of an unpolarized laser to linearly polarized laser device provided by the present invention, as shown in figure 1 As shown, the non-polarized laser conversion linearly polarized laser device includes: a polarization beam splitter 1, a first polarization maintaining mirror 2, a 1 / 2 wave plate 3, a polarization beam combiner 4, an electronically controlled phase retarder 5, an electronically controlled Phase delay control host 6 and second polarization maintaining mirror 7 .

[0036] The incident unpolarized laser light 8 is assumed to be completely unpolarized laser light. After entering the polarizing beam splitter 1, it is divided into two beams of linearly polarized light whose polarization directions are perpendicular to each other. One beam is reflected by the beam splitting surface of the polarizing beam splitter 1. The vibration of the light vector The direction is perpendicular to the paper surface, which ...

Embodiment 2

[0049] figure 2 It is a schematic structural diagram of Embodiment 2 of an unpolarized laser to linearly polarized laser device provided by the present invention. The difference between the second embodiment and the first embodiment is only that the outgoing direction of the linearly polarized laser light 11 is different, and this difference is realized by adjusting the phase change amount of the second linearly polarized light 10 by the electronically controlled phase retarder 5 .

[0050] On the beam-splitting surface of the polarizing beam combiner 4, the reflection part of the first linearly polarized light and the transmission part of the second linearly polarized light are coherently enhanced, and the outgoing linearly polarized light 11 will follow the figure 2 exit in the direction shown.

[0051] The non-polarized laser conversion linear polarization laser device provided by the present invention adopts precise phase adjustment and coherent combination technology t...

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Abstract

The invention provides a device converting non-polarized laser to linearly polarized laser. The device comprises a polarization beam splitting mirror, a first polarization maintaining mirror, a 1 / 2 wave plate, an electronically controlled phase retarder, an electronically controlled phase delay control host, a second polarization maintaining mirror and a polarization beam combining mirror. The polarizing beam splitting mirror divides incident non-polarized laser into linearly polarized light 1 and linearly polarized light 2, wherein the polarization directions of the linearly polarized light 1and the linearly polarized light 2 are perpendicular to each other. The linearly polarized light 1 passes through the first polarization maintaining mirror and the 1 / 2 wave plate. The vibration direction of the light vector is rotated by 90 degrees, and the light comes into the polarization beam combining mirror. The phase of the linearly polarized light 2 is changed by the electronically controlled phase retarder, and the light comes into the polarization beam combining mirror through the second polarization maintaining mirror. In the polarization beam combining mirror, the first linearly polarized light and the second linearly polarized light are coherently synthesized and then enhanced to form ray polarized light. According to the invention, for the problem of low conversion efficiencyof non-polarized laser to linearly polarized laser, the device converting non-polarized laser to linearly polarized laser is provided; the effect of coherence enhancement is realized through phase control; and the conversion efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of attenuation and homogenization of high-energy pulsed laser from non-polarized laser to polarized light, in particular to a device for converting non-polarized laser to linearly polarized laser. Background technique [0002] The traditional unpolarized laser conversion linearly polarized laser device is a polarizer, and the polarizer generally uses a Glan-Taylor prism, a Glan-Thomson prism, etc. After the unpolarized light passes through the polarizer, it will be divided into polarization directions perpendicular to each other. Two beams of linearly polarized light, considering that in laser technology, generally only one polarization direction of linearly polarized light needs to be used, so the polarizer usually sets an absorption surface or escape window for the light of the other polarization direction to be absorbed. Or exit through the escape window, so that the light in this polarization direction w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28
Inventor 马丽丽宋连科牛明生韩培高郝殿中吴闻迪
Owner QUFU NORMAL UNIV