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Design and analysis of spectral beam combining system for fiber lasers based on a concave grating

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Abstract

A novel fiber laser spectral beam combining scheme based on a concave grating is presented. The principle of the presented system is analyzed, and a concave grating with blazed structure for spectral beam combining is designed. The combining potential of the system is analyzed, and the results show that 39 Yb-doped fiber laser can be spectrally beam combined via the designed system. By using scalar diffraction theory, the combining effect of the system is analyzed. The results show that the diffraction efficiency of the designed concave grating is higher than 72% over the whole gain bandwidth, and the combining efficiency is 73.4%. With output power of 1 kW for individual fiber laser, combined power of 28.6 kW can be achieved.

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Authors and Affiliations

  1. Telecommunication Engineering Institute, Air Force Engineering University, Xi’an, 710077, China

    Zhuo-liang Wu  (吴卓亮), Shang-hong Zhao  (赵尚弘), Xing-chun Chu  (楚兴春), Xi Zhang  (张茜), Sheng-bao Zhan  (占生宝) & Li-hua Ma  (马丽华)

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  1. Zhuo-liang Wu  (吴卓亮)
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  2. Shang-hong Zhao  (赵尚弘)
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  3. Xing-chun Chu  (楚兴春)
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  4. Xi Zhang  (张茜)
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  5. Sheng-bao Zhan  (占生宝)
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  6. Li-hua Ma  (马丽华)
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Corresponding author

Correspondence to Zhuo-liang Wu  (吴卓亮).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.60678018).

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Wu, Zl., Zhao, Sh., Chu, Xc. et al. Design and analysis of spectral beam combining system for fiber lasers based on a concave grating. Optoelectron. Lett. 8, 33–36 (2012). https://doi.org/10.1007/s11801-012-1093-4

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  • DOI: https://doi.org/10.1007/s11801-012-1093-4

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