Random polarized laser splitting device and method

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...

AI Technical Summary

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

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