Engineering approach to the computation of the focusing system of fiber-optics laser

Authors: Vagin D.V., Simonov A.P.
Published in issue: #6(23)/2018
DOI: 10.18698/2541-8009-2018-6-327
Category: Mechanical Engineering and Machine Science | Chapter: Technology and Equipment of Mechanical and Physical Processing
Keywords: fiber-optics laser, laser optical system, laser beam distortion, quality of laser emission, optimal focal distance, laser emission beam diameter
Published: 13.06.2018

The article investigates the problem of adapting the methods of computing the diameter of the focused laser emission beam in case of the known laser beam divergence in order to calculate the optical path of fiber-optics laser. We have obtained the dependency of the focused laser emission beam diameter in case of the known quality parameters of laser emission BPP and М2, which are extensively used for describing the parameters of today’s fiber-optics lasers. The authors find out an analytic expression for evaluating the optimal focal distance. A nomogram for determining the focal length of the fiber-optics laser optical path under various values of lens aberration characteristics is introduced. We have developed a technique for finding the optimal focal distance of the fiber-optics lasers optical system under known parameters of laser emission and the collimator lens.

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