Title :
Modeling and Characteristics of Gain-Switched Diode-Pumped Er-Yb Codoped Fiber Lasers
Author :
Yang, Jianlong ; Tang, Yulong ; Zhang, Rui ; Xu, Jianqiu
Author_Institution :
Dept. of Phys., Shanghai Jiaotong Univ., Shanghai, China
Abstract :
We investigate the temporal and energy characteristics of gain-switched diode-pumped Er-Yb codoped fiber lasers by establishing and solving an experimentally verified numerical model. With a pulsed laser diode pumping at 975 nm and in a proper repetition rate range, the laser exhibits the potential of lasing pulses of several hundred nanoseconds with excellent synchronism at around 1 and 1.5 μm. The energy scaling relation shows that the 1.5-μm emission is dominant at a low-pump-energy regime, while the lasing at 1 μm takes over at a high-pump-energy regime. We also explore the physical mechanism of the laser by studying the output features at different laser configurations to provide references for further relevant experiments.
Keywords :
erbium; fibre lasers; high-speed optical techniques; laser beams; numerical analysis; optical pumping; optical switches; semiconductor lasers; ytterbium; energy characteristics; energy scaling relation; gain-switched diode-pumped codoped fiber lasers; high-pump-energy regime; laser configurations; lasing pulse; low-pump-energy regime; numerical model; physical mechanism; pulsed laser diode pumping; repetition rate; temporal characteristics; wavelength 1 mum; wavelength 1.5 mum; wavelength 975 nm; Laser excitation; Laser modes; Laser theory; Mathematical model; Pump lasers; Semiconductor lasers; Sociology; Erbium; optical fiber lasers; optical fiber theory; ytterbium;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2012.2225416
