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HE Hu-cheng, YANG Ling-zhen, WANG Yun-cai. Generation of 1.5ps pulses with 0.7nJ of energy based on polarization additive pulse mode-locking[J]. LASER TECHNOLOGY, 2007, 31(1): 77-79.
Citation: HE Hu-cheng, YANG Ling-zhen, WANG Yun-cai. Generation of 1.5ps pulses with 0.7nJ of energy based on polarization additive pulse mode-locking[J]. LASER TECHNOLOGY, 2007, 31(1): 77-79.

Generation of 1.5ps pulses with 0.7nJ of energy based on polarization additive pulse mode-locking

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  • Received Date: December 06, 2005
  • Revised Date: February 21, 2006
  • Published Date: February 24, 2007
  • The dynamics characteristics of a mode-locking laser using a gain-flattened erbium doped fiber amplifier are reported.Based on polarization additive pulse mode locking technique,a self-starting mode-locking of the fiber laser was demonstrated with a gain-flattened erbium doped fiber amplifier,fiber polarization controllers and a polarization dependent isolator.The stable optical pulses train at 1560nm center wavelength and 6.495MHz repetition rate was generated,with 1.5ps pulse width and 0.7nJ pulse energy.Mode locked pulses with dual peak-wavelengths at 1557nm and 1570nm were also observed.The results of the experiment indicate that higher energy of the pulses can be generated by the fiber laser with a gain-switched erbium doped fiber amplifier than that with a general erbium doped fiber.The mode-locked pulse spectrum of the fiber laser with a gain-flattened erbium doped fiber amplifier could show dual peak structure.It's valuable to the design and practicability of the ultra-short fiber lasers.
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