Method of reducing nonlinear effects of optical fiber device and optical component and optical fiber device

Abstract

The invention provides a method of reducing nonlinear effects of an optical fiber device and an optical component and an optical fiber device. The method comprises steps: ultrashort pulse laser in theoptical fiber device is amplified through a gain optical fiber; and the amplified ultrashort pulse laser is directly inputted to an optical isolation device. The gain optical fiber is connected withthe optical isolation device in an optical fiber splicing mode or a free space coupling mode; the gain optical fiber is connected with an optical coupling device in an optical fiber splicing mode or afree space coupling mode so as to amplify the ultrashort pulse laser outputted by the optical coupling device; and the optical isolation device is the optical isolation device with the gain optical fiber pigtail. The gain optical fiber which is the core optical component in the optical fiber device is directly integrated with the optical isolation device, splicing through a non-gain optical fiberis not carried out, the length of the optical fiber through which the ultrashort pulses pass is shortened, a nonlinear threshold is improved, nonlinear effects are effectively reduced, and the outputpower, in particularly the pulse peak power, of the ultrashort pulse laser is improved.

Description

technical field [0001] The invention relates to the technical field of optical fiber laser amplification, in particular to the technical field of ultrashort optical fiber laser amplification, in particular to a method for reducing the nonlinear effect of optical fiber devices, an optical component and an optical fiber device. Background technique [0002] With the development of laser technology itself and the advancement of laser processing technology, ultrashort pulse lasers, especially picosecond lasers, are more and more widely used in the field of industrial microprocessing. Due to the short pulse width, when the laser pulse interacts with the solid, the electrons do not have enough time to transfer energy to the lattice, thereby generating numerous plasmas on the surface of the material, and the energy dissipates along with the removal of the material, thus appearing Strong etching effect. That is, when the laser pulse width is much shorter than the heating time of th...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for reducing the nonlinear effect of optical fiber devices, an optical component and an optical fiber device, which are used to solve the problem of ultrashort optical fiber lasers in the prior art. The problem of large pulse nonlinear effects

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