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High-Efficient Beam Combining of Polarized High Power Lasers by Time Multiplexing Technique

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7 Author(s)
Jian Xu ; Res. Center for Laser Phys. & Technol., Tech. Inst. of Phys. & Chem., Beijing, China ; Hongwei Gao ; Qinjun Peng ; Dafu Cui
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We demonstrated a novel highly efficient polarized combining technique, enabling combing power scaling by increasing the number of individual lasers. With commercial polarization rotators, up to 98.7% combining efficiency has been obtained using three linearly polarized pulsed lasers. The beam quality of the combined laser was 12 mm·mrad at 109 W, which was comparable with starting ones. To the best of our knowledge, these results represent the highest power combining efficiency to date for scalable polarized combining system.

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Photonics Technology Letters, IEEE  (Volume:26 ,  Issue: 3 )