Passive coherent combination of all-fiber multichannel pulsed laser based on optical feed-back ring cavity

Xiang Ji; Pu Zhou; XiaoLin Wang; HengWei Zhang; QiSheng Lu; YiJun Zhao

doi:10.1117/12.2034830

17 September 2013 Passive coherent combination of all-fiber multichannel pulsed laser based on optical feed-back ring cavity

Xiang Ji, Pu Zhou, XiaoLin Wang, HengWei Zhang, QiSheng Lu, YiJun Zhao

Author Affiliations +

Proceedings Volume 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications; 89041J (2013) https://doi.org/10.1117/12.2034830
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Self-organized passive coherent beam combination of multichannel pulsed laser with all-fiber configuration is reported. The phase of multichannel Yb-doped pulsed fiber amplifiers is locked by optical feed-back ring cavity. The traditional disadvantage of energy dissipation to side lode for lower aperture filling is solved via all-fiber laser array with single-aperture configuration. Coherent beam combination of four pulsed fiber amplifiers is experimentally demonstrated. Variable pulsed laser can be obtained by adjusting a AOM,stable combination pulsed fiber laser with excellent temporal and spatial characteristic is achieved. The efficiency of coherent combination is up to 85.0%. This approach presented here provides a feasible technique for power scaling of high-power pulsed fiber laser and maintaining beam quality simultaneously.

Citation Download Citation

Xiang Ji, Pu Zhou, XiaoLin Wang, HengWei Zhang, QiSheng Lu, and YiJun Zhao "Passive coherent combination of all-fiber multichannel pulsed laser based on optical feed-back ring cavity", Proc. SPIE 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications, 89041J (17 September 2013); https://doi.org/10.1117/12.2034830

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