TY - JOUR
T1 - Gamma-shaped long-cavity normal-dispersion mode-locked Er-fiber laser for sub-nanosecond high-energy pulsed generation
AU - Nyushkov, B.N.
AU - Denisov, V.I.
AU - Pivtsov, V.S.
AU - Ivanenko, Aleksey V.
AU - Kobtsev, S.M.
AU - Turitsyn, Sergei K.
AU - Mou, Chengbo
AU - Zhang, Lin
PY - 2012/1
Y1 - 2012/1
N2 - We propose the design of a novel ?-shaped fiber laser resonator and apply it to build a long-cavity normaldispersion mode-locked Er-fiber laser which features enhanced functionalities for management and optimization of pulsed lasing regimes. We report the generation of sub-nanosecond pulses with the energy of ~0.5 µJ at a kilohertz-scale repetition rate in an all-fiber system based on the new laser design. A combination of special design solutions in the laser, such as polarization instability compensation in the ultra-long arm of the resonator, intra-cavity spectral selection of radiation with a broadband fiber Bragg grating, and polarization selection by means of a tilted refractive index grating, ensures low amplified spontaneous emission (ASE) noise and high stability of the laser system output parameters.
AB - We propose the design of a novel ?-shaped fiber laser resonator and apply it to build a long-cavity normaldispersion mode-locked Er-fiber laser which features enhanced functionalities for management and optimization of pulsed lasing regimes. We report the generation of sub-nanosecond pulses with the energy of ~0.5 µJ at a kilohertz-scale repetition rate in an all-fiber system based on the new laser design. A combination of special design solutions in the laser, such as polarization instability compensation in the ultra-long arm of the resonator, intra-cavity spectral selection of radiation with a broadband fiber Bragg grating, and polarization selection by means of a tilted refractive index grating, ensures low amplified spontaneous emission (ASE) noise and high stability of the laser system output parameters.
KW - mode-locked fiber laser
KW - gamma cavity
KW - normal dispersion
KW - tilted fiber grating
KW - sub-nanosecond pulses
KW - low repetition rate
KW - high pulse energy
KW - ASE suppression
KW - double-pass fiber amplifier
UR - http://www.scopus.com/inward/record.url?scp=83655211948&partnerID=8YFLogxK
UR - http://onlinelibrary.wiley.com/doi/10.1002/lapl.201110088/abstract
U2 - 10.1002/lapl.201110088
DO - 10.1002/lapl.201110088
M3 - Article
AN - SCOPUS:83655211948
SN - 1612-2011
VL - 9
SP - 59
EP - 67
JO - Laser Physics Letters
JF - Laser Physics Letters
IS - 1
ER -