Abstract An intracavity coherent coupling Michelson erbium-doped fibre (EDF) laser (MCEDFL) is proposed and demonstrated. By using this laser system, we find a means to obtain a maximum power output at the same pumping power level. From the experiment based on fibre Bragg gratings (FBGs) with different reflectivities from 6% to 100%, we find that the reflectivity of the FBG plays a vital role in improving the performance of the MCEDFL. At the same time, the MCEDFL with a polarizer can be coherently combined effectively. This type of system, in principle, is compatible with other more powerful pumping methods, such as cladding pumping, and brings some novel perspectives to the realization of high power lasers.
Received: 27 January 2007
Revised: 15 March 2007
Accepted manuscript online:
Fund: Project supported by the Tianjin
Natural Science Foundation (Grant No 06YFJZJC00300), and the
National Science Foundation for Postdoctoral Scientists of China
(Grant No 20060390666).
Cite this article:
Jia Xiu-Jie(贾秀杰), Liu Feng-Nian(刘丰年), Fu Sheng-Gui(付圣贵), Liu Yan-Ge(刘艳格), Yuan Shu-Zhong(袁树忠), and Dong Xiao-Yi(董孝义) Realization of an efficient coherent combination via Michelson cavity 2007 Chinese Physics 16 2993
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