Research on the characteristics of the Q-switched ytterbium-doped fiber lasers

Abstract

Fiber lasers with pulse duration and repetition tuned have great application in space probe. On the basis of typical Q-switched ytterbium-doped double-clad fiber lasers under forward pump,the ion population and propagation equations for both pumping and signal light are presented, and the steady-state solution of inversion ion population, pumping power distribution and signal power distribution due to ASE are studied by the traveling-wave method. Moreover, the effects of fiber-laser parameters such as Yb-doped fiber length, pump power and fiber core diameter on pulse characteristics are analyzed.