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Luo J.L.,Jiangsu University | Luo J.L.,Jiangsu Key Laboratory of Advanced Laser Materials and Devices | Li L.,Jiangsu University | Li L.,Jiangsu Key Laboratory of Advanced Laser Materials and Devices | And 11 more authors.
IEEE Photonics Technology Letters | Year: 2014

We report an L-band passively mode-locked erbium-doped fiber ring laser using the nonlinear polarization rotation technique. The center wavelength of the fiber laser can be tuned from 1575.5 to 1603.6 nm. The 458.7-fs pulses at 1603.6 nm show an 8.6-MHz pulse repetition rate. To the best of our knowledge, it is the longest wavelength for which subpicosecond pulses have been achieved so far with the nonlinear polarization rotation technique. © 1989-2012 IEEE. Source


Wang Y.,Jiangsu University | Wang Y.,Jiangsu Key Laboratory of Advanced Laser Materials and Devices | Wang Y.,Fudan University | Wang S.,Jiangsu University | And 15 more authors.
IEEE Photonics Technology Letters | Year: 2014

Vector soliton generation is experimentally demonstrated in an all-fiber Tm/Ho-doped fiber laser operated at 1951 nm. To the best of our knowledge, it is the first clear evidence of group-velocity-locked vector soliton formation around 2 \mu{\rm m}. Numerical simulation well reproduces the experimental observation and suggests that the central wavelength shift between the two orthogonal polarized components of the vector soliton is determined by the cavity birefringence. The central wavelength shift increased with the increasing of the cavity birefringence. However, the vector solitons become linearly polarized if the cavity birefringence is too strong. Experimental observation and numerical simulations both suggest that the vector soliton generation is wavelength independent. © 1989-2012 IEEE. Source


Wang Y.,Fudan University | Wang Y.,Jiangsu Key Laboratory of Advanced Laser Materials and Devices | Wang Y.,Jiangsu University | Zhao T.,Fudan University | And 8 more authors.
Optics Express | Year: 2014

We report on an acousto-optic Q-switched 1645 nm Er:YAG ceramic laser resonantly pumped by using an Er,Yb fiber laser at 1532 nm. Maximum continuous wave output powers of 2.1 W and 2.4 W were obtained for 10% and 20% transmission OCs under 10.5 W of incident pump power, respectively. In Q-switched mode, the laser produced pulses with ∼3.7 mJ energy and 82 ns width at 200 Hz repetition rate for 20% transmission OC under 8.6 W of incident pump power, corresponding to a peak power of ∼45 kW. ©2014 Optical Society of America. Source

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