Chin. Phys. Lett.  2007, Vol. 24 Issue (11): 3175-3178    DOI:
Original Articles |
Pulse Evolution Characteristics in Self-Similar Mode-locked Fibre Laser
TU Cheng-Hou;LI Zhen;LEI Ting;LI Yong-Nan;GUO Wen-Gang; WEI Dai; ZHU Hui;ZHANG Shuang-Gen;LU Fu-Yun
Institute of Physics, Nankai University, Tianjin 300071
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TU Cheng-Hou, LI Zhen, LEI Ting et al  2007 Chin. Phys. Lett. 24 3175-3178
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Abstract A self-similar mode locked fibre laser is studied based on a numerical model. By introducing a dimensionless factor k to characterize the pulse shape, the self-similar pulse evolution, formation and the temporal and spectral shape changes due to the elements in the cavity are investigated throughout the laser cavity. The results show that in the self-similar mode locked fibre laser, self-similar pulse is first formed in the single-mode fibre, which is then amplified in the gain fibre. Gain bandwidth has a small influence on pulse shape, so high energy self-similar pulse can be obtained after amplification. Because net cavity dispersion directly influences the pulse width as well as
peak power after compression by a pair of gratings, which can determine
the pulse self-similar evolution, it is very important to control the net cavity dispersion to a certain range to obtain self-similar pulses.
Keywords: 42.80.W      42.81.D     
Received: 25 April 2007      Published: 23 October 2007
PACS:  42.80.W  
  42.81.D  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2007/V24/I11/03175
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TU Cheng-Hou
LI Zhen
LEI Ting
LI Yong-Nan
GUO Wen-Gang
WEI Dai
ZHU Hui
ZHANG Shuang-Gen
LU Fu-Yun
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