Experimental Study of a Pulsed Ytterbium-Doped Fibre Laser with Fast and Slow Saturable Absorbers in a Linear Cavity
GAN Yu1,2, XIANG Wang-Hua1,2, ZHOU Xiao-Fang1,2, ZHANG Gui-Zhong1,2, ZHANG Bing1,2, WANG Yong-Gang1,3, MA Xiao-Yu1,3
1Key Laboratory of Optoelectronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
2College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072
3Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
Experimental Study of a Pulsed Ytterbium-Doped Fibre Laser with Fast and Slow Saturable Absorbers in a Linear Cavity
GAN Yu1,2;XIANG Wang-Hua1,2;ZHOU Xiao-Fang1,2;ZHANG Gui-Zhong1,2;ZHANG Bing1,2;WANG Yong-Gang1,3;MA Xiao-Yu1,3
1Key Laboratory of Optoelectronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
2College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072
3Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
Abstract： We present a linear-cavity stretched-pulse fibre laser with mode locking by a nonlinear polarization rotation and by semiconductor saturable-absorber mirrors. A Q-switched mode-locking cw train and a mode-locking pulse train are obtained in the experiment. We investigate the effects of the equivalent fast saturable absorber and the slow saturable absorbers in experiment. It is found that neither the nonlinear polarization evolution effect nor a semiconductor saturable absorber mirror is enough to produce the stable cw mode-locking pulses in this experiment. A nonlinear polarization evolution effect controls the cavity loss to literally carve the pulses; semiconductor saturable absorber mirrors provide the self-restarting and maintain the stability of the mode-locking operation.
GAN Yu;XIANG Wang-Hua;ZHOU Xiao-Fang;ZHANG Gui-Zhong;ZHANG Bing;WANG Yong-Gang;MA Xiao-Yu;. Experimental Study of a Pulsed Ytterbium-Doped Fibre Laser with Fast and Slow Saturable Absorbers in a Linear Cavity[J]. 中国物理快报, 2006, 23(7): 1790-1792.
GAN Yu, XIANG Wang-Hua, ZHOU Xiao-Fang, ZHANG Gui-Zhong, ZHANG Bing, WANG Yong-Gang, MA Xiao-Yu,. Experimental Study of a Pulsed Ytterbium-Doped Fibre Laser with Fast and Slow Saturable Absorbers in a Linear Cavity. Chin. Phys. Lett., 2006, 23(7): 1790-1792.
2006, Vol. 23 
