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Beam-shaping technique for fiber-coupled diode laser system by homogenizing the beam quality of two laser diode stacks

2020-01-17

 

Author(s): Lin, GY (Lin, Guyi); Zhao, PF (Zhao, Pengfei); Dong, ZY (Dong, Zhiyong); Lin, XC (Lin, Xuechun)

Source: OPTICS AND LASER TECHNOLOGY Volume: 123 Article Number: 105919 DOI: 10.1016/j.optlastec.2019.105919 Published: MAR 2020

Abstract: A beam shaping technique is presented to homogenize the beam quality of two laser diode stacks. We use polarization beam combiners to halve the beam sizes in the slow axis, and then rearrange the beams coming from two stacks to eliminate the lightless areas by using a quartz-plate stack in the fast axis. By this technique, two 12-bar laser diode stacks are coupled into an 800 mu m/0.22 fiber. The experiment shows that the fiber-coupled system has an output power over 1400 W, and the fiber coupling efficiency of 87.5% is achieved, which are almost consistent with the Zemax simulation results.

Accession Number: WOS:000504504400021

ISSN: 0030-3992

eISSN: 1879-2545

Full Text: https://www.sciencedirect.com/science/article/pii/S0030399219313519?via%3Dihub



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