All-fiber passively Q-switched erbium laser using mismatch of mode field areas and a saturable-amplifier pump switch.
We propose and demonstrate an all-fiber self-Q-switched erbium laser system that is saturable-absorber Q switched by the mismatch of the mode-field areas in the resonator and stabilized with a saturable-amplifier pump switch. Sequential pulses with a pulse energy of 8-6 microJ and a pulse duration of 80-320 ns, corresponding to a pulse repetition rate of 0.25-1 kHz, were obtained using a cw 980 nm laser-diode pump. A peak pulse power of near 100 W was achieved.
Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan. tzongyow@mail.ncku.edu.tw
Tzong-Yow
TY
Tsai
Yen-Cheng
YC
Fang
Zhi-Cheng
ZC
Lee
Hong-Xi
HX
Tsao