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WANG Feng-rui, LI Ming-zhong, LIN Hong-huan, WANG Jian-jun. Research of mode selection in a coiled Yb3+ doped multimode double clad fiber laser[J]. LASER TECHNOLOGY, 2007, 31(6): 607-609,612.
Citation: WANG Feng-rui, LI Ming-zhong, LIN Hong-huan, WANG Jian-jun. Research of mode selection in a coiled Yb3+ doped multimode double clad fiber laser[J]. LASER TECHNOLOGY, 2007, 31(6): 607-609,612.

Research of mode selection in a coiled Yb3+ doped multimode double clad fiber laser

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  • Received Date: September 18, 2006
  • Revised Date: January 24, 2007
  • Published Date: December 24, 2007
  • In order to realize the monomode output in large core multimode double-clad fiber laser to suppress the nonlinear effects in high power double-clad fiber lasers,mode selection by bending the large core multimode double-clad fiber to a suitable radius was used.Theoretical analysis and experiments about mode selection in large core multimode double-clad fiber laser were demonstrated in this paper.Factors that influence the laser bending loss and output mode,such as inner-clad refractive index,core radius,laser wavelength,bending radius,were obtained.Monomode output was obtained from multimode double-clad fiber laser by bending the homemade Yb3+-doped large core multimode fiber.The laser has a fundamental mode output with power of 9W,conversion efficiency of 17.3%.The research is useful in mode selection from large core multimode double-clad fiber laser.
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