Femto second optical fiber laser with multiple port coupled output

Abstract

The femto second laser features that the pumping light is coupled to enter into the transmission optical fiber and optical fiber beam splitter, and the then enter into toroidal cavity optical fiber laser comprising connected Er doped optical fiber and laser optical fiber. The toroidal cavity is provided with polarized optical fiber isolator, optical fiber polarization controller and optical fiber output coupler, and in the laser output terminal there is multiple-port output power optical fiber splitter. The present invention solves the problem of optical fiber splitting coupling, raises laser transmission quality and coupling efficiency, provides optical fiber laser with multiple port output in required slitting coupling ratio and makes laser application more convenient and flexible.

Description

technical field [0001] The invention is an improvement on the structure of a fiber laser and belongs to the technical field of lasers. Background technique [0002] In the prior art, the beam splitting coupling of the optical fiber mostly adopts the fusion method, which destroys the internal structure of the optical fiber, and also affects the transmission of the laser in the optical fiber, and it is impossible to determine the splitting ratio of the laser beam. Moreover, the existing fiber laser has only one output port, and a beam splitter is used to couple a part of the laser light from the laser; this brings inconvenience to the use, and in some applications, in addition to the application of the beam, it is necessary to perform precise timing with other instruments Domain synchronization or monitoring the working status of the laser, so multi-port output is often required. However, due to the problems of the existing beam splitting and coupling methods, it has not been...

AI Technical Summary

Problems solved by technology

[0002] Because the beam splitting coupling of the optical fiber adopts the fusion method in the prior art, the internal structure of the optical fiber is destroyed, and the transmission of the laser in the optical fiber is also affected, and the beam splitting ratio of the laser beam cannot be determined.

Moreover, the existing fiber laser has only one output port, and a beam splitter is used to couple a part of the laser light from the laser; this brings inconvenience to the use, and in some applications, in addition to the application of the beam, it is necessary to perform precise timing with other instruments Domain synchronization or monitoring the working status of the laser, so multi-port output is often required

However, due to the problems of the existing beam splitting coupling method, it has not been solved for a long time

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