The Theoretical Calculation and Influencing Factors of Yb3+ Doped Double-Clad Fiber Laser

Yuan Yuan Gu; Yue Ming Fu; Hui Lu; Yan Cui

doi:10.4028/www.scientific.net/AMM.893.52

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 893The Theoretical Calculation and Influencing...

The Theoretical Calculation and Influencing Factors of Yb³⁺Doped Double-Clad Fiber Laser

Abstract:

The energy level structure of Yb3+ is analyzed, and a theoretical model is established. Theinfluence of pumping power, fiber length, reflectance of cavity mirror and other related parameters onthe performance of the laser is analyzed. The maximum output power can be achieved at a certainreflectance. The higher the input pump power, the smaller the reflectance of the rear mirror whichobtains the maximum output power. For different pumping wavelengths, the optimal length of thegain fiber is not the same, and it is also different from the optimal length determined by the minimumpumping threshold. Therefore, in the design of fiber lasers, we should consider comprehensively todetermine the appropriate fiber length. Reducing inner raduis is beneficial to improving slopeefficiency when the characteristics of the fiber itself remain unchanged.

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Periodical:

Applied Mechanics and Materials (Volume 893)

Pages:

52-56

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.893.52

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Online since:

July 2019

Authors:

Yuan Yuan Gu*, Yue Ming Fu, Hui Lu, Yan Cui

Keywords:

Double-Clad Fiber, Energy Level Structure, Fibre Laser, Yb³⁺ Doped

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