The high-energy rectangular pulse dissipative soliton （DS） is achieved in a long-cavity sigma-shaped configuration erbium-doped fiber laser. A long fiber is inserted in the linear arm of the sigma-shaped configurati...The high-energy rectangular pulse dissipative soliton （DS） is achieved in a long-cavity sigma-shaped configuration erbium-doped fiber laser. A long fiber is inserted in the linear arm of the sigma-shaped configuration to extend the resonator length twice, which effectively improves the pulse energy. The nonlinear polarization rotation technique is employed to realize the mode-locked state. Stable rectangular pulses with pulse energy of 421.22 nJ are obtained at the pump power of 620mW. To the best of our knowledge, this high pulse energy is a new record of the rectangular pulse mode-locked DS fiber lasers.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 61275144 and 61308049, the PhD Start-up Fund of Natural Science Foundation of Guangdong Province under Grant Nos S2012040007242 and S2013040012496, the Science and Technology Project of Shenzhen City under Grant Nos JCYJ20120613110637373, JCYJ20130329142022715 and JC201105170655A, the Improvement and Development Project of Shenzhen Key Lab under Grant No ZDSY20120612094924467, and the Natural Science Foundation of Shenzhen University under Grant No 201203.
文摘The high-energy rectangular pulse dissipative soliton （DS） is achieved in a long-cavity sigma-shaped configuration erbium-doped fiber laser. A long fiber is inserted in the linear arm of the sigma-shaped configuration to extend the resonator length twice, which effectively improves the pulse energy. The nonlinear polarization rotation technique is employed to realize the mode-locked state. Stable rectangular pulses with pulse energy of 421.22 nJ are obtained at the pump power of 620mW. To the best of our knowledge, this high pulse energy is a new record of the rectangular pulse mode-locked DS fiber lasers.
