Experimental study and theoretical simulation for high gain compact Er3+-Yb3+-codoped fiber laser

Feng Song; Zhenzhou Cheng; Changguang Zou; Lanjun Luo; Yingying Cai; Wenyi Piao; Chen Wei; Jianguo Tian

doi:10.1117/12.837930

24 November 2009 Experimental study and theoretical simulation for high gain compact Er³⁺-Yb³⁺-codoped fiber laser

Feng Song, Zhenzhou Cheng, Changguang Zou, Lanjun Luo, Yingying Cai, Wenyi Piao, Chen Wei, Jianguo Tian

Proceedings Volume 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration; 75090N (2009) https://doi.org/10.1117/12.837930
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

Heavy Er³⁺-Yb³⁺-codoped fiber lasers can provide high gain laser emission, but the energy transfer and cumulative transfer processes between Er³⁺ and Yb³⁺ cannot be neglected. In this paper, the cumulative transfer and double-energy transfer processes are considered in the propagation equation and rate equation model. And we use this model to simulate the lasing operation of a short Er³⁺-Yb³⁺-codoped phosphate fiber laser. Then a 10.4 cm compact fiber laser with an output power of 170.4 mW, a bandwidth of 0.053 nm and a slope efficiency of 35.3% is demonstrated in experiment. The experimental results show that the theoretical model we used is more accurate than former models. Finally, the dependence of output power on output coupler reflectivity, active fiber length and Er³⁺-Yb³⁺ concentrations are investigated numerically. According to the simulation, when the pump power is less than 700 mW, Er³⁺ concentration of 1.0-1.2×10²⁶ ions/m³, Yb³⁺ concentration of 4.0-8.0×10²⁷ ions/m³, output coupler reflectivity of 0.7-0.8 and fiber length of 8-12 cm are desirable to optimize the performance of Er³⁺-Yb³⁺-codoped phosphate fiber laser. PACS 42.60.Pk; 42.55.Wd

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Feng Song, Zhenzhou Cheng, Changguang Zou, Lanjun Luo, Yingying Cai, Wenyi Piao, Chen Wei, and Jianguo Tian "Experimental study and theoretical simulation for high gain compact Er³⁺-Yb³⁺-codoped fiber laser", Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090N (24 November 2009); https://doi.org/10.1117/12.837930

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KEYWORDS

Ytterbium

Fiber lasers

Reflectivity

Output couplers

Optical simulations

Energy transfer

Erbium

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