Improving efficiency of spectral beam combining by optimizing reflectivity of output coupler for laser diode array

Yongqi Chen; Pengfei Zhao; Yulong Wu; Yunfei Qi; Yonggang Zou; Xiaohui Ma; Li Xu; Xuechun Lin

doi:10.1117/12.2247592

19 October 2016 Improving efficiency of spectral beam combining by optimizing reflectivity of output coupler for laser diode array

Yongqi Chen, Pengfei Zhao, Yulong Wu, Yunfei Qi, Yonggang Zou, Xiaohui Ma, Li Xu, Xuechun Lin

Author Affiliations +

Proceedings Volume 10152, High Power Lasers, High Energy Lasers, and Silicon-based Photonic Integration; 101521F (2016) https://doi.org/10.1117/12.2247592
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

This paper reports a study on the relationship between the combining efficiency and reflectivity of output coupler of diode array in spectral beam combining. The combining efficiency is analyzed theoretically by using principle of the resonator. The simulation shows that high reflectivity will lead to low combining efficiency, and low reflectivity may cause the failure of wavelength locking. With increasing of the reflectivity of the OC, the combining efficiency changes like a downward parabola which has a maximum value of ~10%. The experiments demonstrate that the highest efficiency is obtained at a reflectivity of 10%, and the experimental results agree well with the theoretical analysis.

Citation Download Citation

Yongqi Chen, Pengfei Zhao, Yulong Wu, Yunfei Qi, Yonggang Zou, Xiaohui Ma, Li Xu, and Xuechun Lin "Improving efficiency of spectral beam combining by optimizing reflectivity of output coupler for laser diode array", Proc. SPIE 10152, High Power Lasers, High Energy Lasers, and Silicon-based Photonic Integration, 101521F (19 October 2016); https://doi.org/10.1117/12.2247592

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