Comparison of end-pumped and multi-point pumped Yb3+-doped gain guided and index antiguided fiber laser

End-pumped and multi-point pumped Yb3+-doped gain guided and index antiguided (GG+IAG) fiber laser are analyzed by solving the rate equations and 3-D thermal conduction equations. Simulation results show that the multi-point pumped scheme can provide lower operating temperature and better temperature uniformity. Meanwhile, fabrication complexity, loss resulted from pump point should be taken into consideration in the practical design.

► End-pumped and multi-point pumped Yb3+-doped GG-IAG fiber laser are investigated.
► The effects of two pump methods are compared with each other.
► The influence of pump point loss is studied.