A high-power fiber laser indicating light protection device and its implementation method

Abstract

The invention discloses a high-power optical fiber laser indicating light protection device and its implementation method, belonging to the field of optical fiber lasers, comprising an indicating light laser, an optical fiber winding mechanism and a cladding light stripping mechanism, an optical fiber connected to the indicating light laser and two sets of The fiber winding mechanism is connected with the cladding optical stripping mechanism. The fiber winding mechanism is used to change the diameter of the fiber coil and the angle of the fiber bending. The core light in the fiber enters the cladding from the core, and the fiber winding mechanism takes the fiber The core light is converted into cladding light; through the cladding light stripping mechanism twice, the stripping can be carried out step by step, which can effectively strip the reverse core light and cladding light of the high-power fiber laser, and protect the pointing light laser from damage. But it will not cause the attenuation of the indicated light intensity.

Description

Technical field [0001] The present invention relates to fiber laser technology, and particularly relates to a high power fiber laser light indicating protection device and a method embodiment. Background technique [0002] Its high power laser beam quality, high continuous power, good stability, small size, easy to move, etc., widely used in industrial processes. [0003] In high power fiber lasers, commonly used in the bidirectional pumping manner, due to the structure and the cavity resonator nonlinear effect or the like, such that the inverted signal light is strong, up to dozens or even hundreds watts power, a large number of reverse signal light will light indicating means damage, damage using the pointing light. Thus, a rational design, compact light protection means for indicating high-power fiber lasers is very important. [0004] At present, the use of fiber optic circulator, two reverse isolation signal light to the dichroic mirror and other devices. However, fiber opti...

AI Technical Summary

Problems solved by technology

However, fiber optic circulators cannot isolate pump light and signal light of different wavelengths at the same time.

The dichroic mirror is due to the introduction of a spatial structure, which makes the system less stable than the all-fiber structure. The indicator light protection device with the all-fiber structure has a simple structure and high stability, but it is difficult to strip the reverse core light at present, and cannot Effectively strips opposite core and cladding light

[0005] Therefore, the existing fiber laser indicator light protection device cannot simultaneously strip the reverse fiber core signal light and cladding signal light at the same time, and has a complex structure and high cost, which is not suitable for mass production of high-power fiber lasers.

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