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Chinese Physics, 2007, Vol. 16(10): 2993-2997    DOI: 10.1088/1009-1963/16/10/029
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Realization of an efficient coherent combination via Michelson cavity

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)
Institute of Modern Optics, Nankai University, Tianjin 300071, China
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.
Keywords:  self-organization coherent combining      intracavity coherent combining      Michelson erbium-doped fibre laser      reflectivity of an FBG  
Received:  27 January 2007      Revised:  15 March 2007      Accepted manuscript online: 
PACS:  42.55.Wd (Fiber lasers)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
  42.79.Ci (Filters, zone plates, and polarizers)  
  42.79.Dj (Gratings)  
  42.81.Wg (Other fiber-optical devices)  
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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