We present a kinetic model for <i>Q</i>-switched, cladding-pumped, high-power Yb-doped fiber lasers that are based on the rate equation, in a difference equation form, of ion population and propagation equations for both pumping and signal light. The effects of fiber-laser parameters, such as doping, length, pump power, and repetition rate on pulse characteristics are analyzed. This model is used to analyze the performance of <i>Q</i>-switched multicore fiber lasers and to show the output pulses with enhanced characteristics.
© 2004 Optical Society of America
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(230.6080) Optical devices : Sources
Yanming Huo, Robert T. Brown, George G. King, and Peter K. Cheo, "Kinetic Modeling of Q-Switched High-Power Ytterbium-Doped Fiber Lasers," Appl. Opt. 43, 1404-1411 (2004)