Light polarization compensation device based on beam shaping technology and space beam combination system

Abstract

The invention relates to a light polarization compensation device for utilizing a beam shaping technology and a space beam combination system to convert incident laser into polarized laser to be output and belongs to the technical field of light polarization compensation. The device mainly comprises an input optical interface, a polarization beam splitter, a shaper, a first reflecting mirror, a spiral wave device, a second reflecting mirror and a space beam combiner. Against the polarization compensation problem of a laser, the light polarization compensation device aims to solve the problem of polarization instability and low extinction ratio of the laser, the lossless polarization compensation device based on the high-duty-cycle space beam combination system and the beam shaping technology is provided, and random laser is converted into high-extinction-ratio polarization laser to be output on the condition that the laser power level and beam quality are not affected. The light polarization compensation device is very small in power loss, the structure of the laser is not affected, and the cost and the complexity of the linear polarization laser can be effectively reduced; a control method for the light polarization compensation device is simple, a feedback and control system does not need to be arranged, and the light polarization compensation device is stable and reliable in performance.

Description

technical field [0001] The invention relates to an optical polarization compensation device that converts incident laser light into polarized laser output by using beam shaping technology and a spatial beam combining system, belongs to the technical field of optical polarization compensation, and can be widely used in beam synthesis, nonlinear frequency conversion, polarization optics, etc. field. Background technique [0002] High-brightness linearly polarized lasers are widely used in laser communication, remote sensing and telemetry, industrial processing, scientific research and other fields. However, due to thermal effects, nonlinear effects, and stress birefringence effects of the gain medium, it is difficult for a single laser to obtain high-brightness linearly polarized laser output. Especially in the field of fiber lasers, because the fiber medium is extremely thin and long in length, it is more susceptible to external interference or bending, resulting in temperat...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of laser polarization compensation, aiming at solving the problems of laser polarization instability and low extinction ratio, and proposes a non-destructive polarization compensation device based on high duty ratio space beam combining system and beam shaping technology. Convert any laser light to high extinction ratio polarized laser output without compromising laser power level and beam quality

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