Device and method for splitting randomly polarized laser light

A technology of random polarization and polarized light, applied in the field of laser, can solve the problems of power ratio limitation of splitting, inability to perform precise adjustment, poor consistency of processing quality, etc., to achieve high utilization rate of total power, improve energy control accuracy, and reduce energy decay. Effect

Active Publication Date: 2016-01-06
SUZHOU DELPHI LASER +1
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Problems solved by technology

At present, light can only be split by coating transflective lenses with different transmittance and reflectance, but the power ratio of light splitting is limited by the original coated lenses, and cannot be adjusted accurately
Such imprecise spectroscopic effect will make the consistency of subsequent processing quality poor
At present, there is no spectroscopic technology and method that can accurately and continuously adjust the polarization state of the laser in a wide range

Method used

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  • Device and method for splitting randomly polarized laser light

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Embodiment Construction

[0020] The invention utilizes a polarized stereoscopic beam splitter (PBS) to split the random polarization laser light and the power of each beam can be continuously adjusted.

[0021] Such as figure 1 As shown, in the device for splitting random polarized laser light, the optical path of the output end of the laser 1 is arranged in sequence with a shutter collimation unit 2 and a first polarizing stereoscopic beam splitter PBS3, and the beam transmission output end of the first polarizing stereoscopic beam splitter PBS3 is set The first total reflection mirror 4 is arranged, the light beam reflection output end of the first polarizing stereoscopic beam splitter PBS3 is provided with the second total reflection mirror 5, and the beam reflection output ends of the first total reflection mirror 4 and the second total reflection mirror 5 are provided with the first total reflection mirror 5. Two polarizing three-dimensional beam splitter PBS8, the optical path between the first ...

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Abstract

The invention relates to a random polarized laser splitting device and method. A laser output light path is provided with a first three-dimensional PBS (Polarization Beam Splitter); a first total reflection mirror and a second total reflection mirror are arranged at a light beam transmission output end and a light beam reflection output end of the first three-dimensional PBS respectively; a light beam reflection output end of each total reflection mirror is provided with a second three-dimensional PBS; a horizontal emergent end of the second three-dimensional PBS is provided with a third half lambda slide and a third three-dimensional PBS; a horizontal emergent end of the third three-dimensional PBS is provided with a fourth half lambda slide and a fourth three-dimensional PBS; a vertical emergent end of the fourth three-dimensional PBS is provided with a power meter; a vertical emergent end of the second three-dimensional PBS, a vertical emergent end of the third three-dimensional PBS and the vertical emergent end of the fourth three-dimensional PBS are provided with a quarter lambda slide and a focusing mirror respectively. Accordingly, the control accuracy of the beam splitting energy can be significantly improved and the expansion of the number of the beam splitting is facilitated.

Description

technical field [0001] The invention relates to a device and method for splitting random polarized laser light, belonging to the field of laser technology. Background technique [0002] As an advanced processing method in modern science and technology, laser processing has attracted more and more attention from various industries, and the feasibility and practicability of processing through lasers has also been verified more and more. [0003] The cost per unit power of the laser decreases as the power of the laser increases. In order to save costs, it is necessary to divide the high-power laser into multiple beams for processing. [0004] Commonly used fiber lasers output light in a random polarization state. At present, light splitting can only be performed by coating semi-transparent and semi-reflective lenses with different transmittance and reflectance ratios, but the power ratio of light splitting is limited by the original coated lenses and cannot be adjusted precise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/067
CPCB23K26/0643B23K26/067
Inventor 赵裕兴狄建科益凯劼张子国
Owner SUZHOU DELPHI LASER
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