Investigation of temperature influence on output performances of high-power cladding-pumped Er,Yb co-doped fiber laser

Wenting Chen; Jianjian Sha; Yong Wang; Deyuan Shen

doi:10.1117/12.2002720

22 March 2013 Investigation of temperature influence on output performances of high-power cladding-pumped Er,Yb co-doped fiber laser

Wenting Chen, Jianjian Sha, Yong Wang, Deyuan Shen

Author Affiliations +

Proceedings Volume 8601, Fiber Lasers X: Technology, Systems, and Applications; 86012A (2013) https://doi.org/10.1117/12.2002720
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

Effect of the fiber’s temperature on lasing performance is investigated in high-power, cladding-pumped Er, Yb co-doped fiber laser system. A three-layer symmetric cylindrical model is applied to describe the temperature distribution of the fiber under natural air convection. Radial temperature distribution of the fiber is calculated with consideration of the quantum defect heat, the heat from the absorption of spontaneous emission, and the convection and radiation at the heat transfer boundaries. The steady-state theoretical model based on rate equations takes into account of the energy transfers between Er³⁺-ions and Yb³⁺-ions and a fraction of nonparticipatory Yb³⁺-ions. Shooting method and Newton iteration method are used to solve the boundary-value problems under different environmental temperatures, pump powers and reflectivities at the fiber ends. Numerical simulations are consistent with experimental results and show that increasing the fiber’s temperature is an effective strategy to suppress the 1 μm parasitic lasing and improve the lasing performance at 1.5 μm, a similar phenomenon is found with enhancing doping concentrations of the two ions and decreasing the reflectivities at the fiber ends. Our numerical results present a theoretical guideline for further improving the laser performance in terms of output power of ~1.5 μm in high-power Er,Yb-doped fiber laser systems.

Citation Download Citation

Wenting Chen, Jianjian Sha, Yong Wang, and Deyuan Shen "Investigation of temperature influence on output performances of high-power cladding-pumped Er,Yb co-doped fiber laser", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86012A (22 March 2013); https://doi.org/10.1117/12.2002720

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