Multi-variable optimization of an ytterbium-doped fiber laser using genetic algorithm

作者：Hashemi Somaye Sadat; Sabouri Saeed Ghavami^*; Khorsandi Alireza

来源：Optica Applicata, 2015, 45(3): 355-367.

DOI：10.5277/oa150308

• fiber laser
• optimization
• genetic algorithm

We introduce the genetic algorithm for the optimization of an Yb3+-doped double-clad fiber laser based on a multi-variable scheme. The output characteristic of the laser is numerically simulated using real practical values. This is performed through solving the associated steady-state rate equation and investigating the effects of input variables such as pump and signal wavelengths and length of the fiber on the laser output. It is found that pumping of the medium around 975 nm is conducted to attain the maximum output power of similar to 34.8 W, while the stability of the outcoupled power is significantly improved when pumping at 920 nm, confirming good agreement with the reported experimental results. We have also found that by using genetic algorithm base multi-variable optimization, the output power can be significantly increased by about three orders of magnitude and reaches to similar to 28.5 W with optimum and shorter fiber length of similar to 57.5 m. Obtained results show that based on the genetic algorithm multi-variable discipline, fiber characteristics can be optimized according to the gaining of maximum output power.

• 出版日期2015