Title :
Modeling and Analysis of a Pulsed Er-Tm Fiber Laser System
Author :
Mengmeng Tao ; Xisheng Ye ; Fei Wang ; Haichuan Zhao ; Zhenbao Wang ; Pengling Yang ; Guobin Feng
Author_Institution :
State Key Lab. of Laser Interaction with Matter, Northwest Inst. of Nucl. Technol., Xi´an, China
Abstract :
A theoretical model concerning a double-cavity, pulsed, dual-wavelength Er-Tm fiber laser is built. In this laser system, saturation induced passive Q-switching of an Er-doped fiber laser and resonantly pumped gain-switching of a Tm-doped fiber laser are realized simultaneously. Related population transitions of the passive Q-switching and gain-switching processes in this laser system are described. Characteristics of the Er-Tm fiber laser are investigated and discussed with different pump powers and cavity reflectivities. Numerical results indicate that this double-cavity laser configuration shortens the lifetime and improves the maximum recovery ratio of the saturable absorber at high repetition rate.
Keywords :
Q-switching; erbium; fibre lasers; laser cavity resonators; optical pumping; optical saturable absorption; reflectivity; thulium; double-cavity fiber laser; dual-wavelength Er-Tm fiber laser; population transitions; pulsed Er-Tm fiber laser system; pump powers; recovery ratio; reflectivities; repetition rate; resonantly pumped gain-switching; saturable absorber; saturation induced passive Q-switching; Cavity resonators; Erbium-doped fiber lasers; Laser excitation; Laser theory; Laser transitions; Pump lasers; Er-doped fiber laser; Fiber saturable absorber; Q-switch; gain-switch;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2014.2338859
