TY - JOUR
T1 - Dissipative soliton molecules with independently evolving or flipping phases in mode-locked fiber lasers
AU - Zavyalov, Aleksandr
AU - Iliew, Rumen
AU - Egorov, Oleg
AU - Lederer, Falk
PY - 2009/10/22
Y1 - 2009/10/22
N2 - We numerically demonstrate the existence of a discrete family of robust dissipative soliton bound state solutions (soliton molecules) in a mode-locked fiber laser with an instantaneous saturable absorber in the normal dispersion domain. For a certain domain of the small-signal gain, we obtain a robust first-level bound state with almost constant separation where the phase of the two pulses evolves independently. Moreover, their phase difference can evolve either periodically or chaotically depending on the small-signal gain. Interestingly, higher level bound states exhibit a fundamentally different dynamics. They represent oscillating solutions with a phase difference alternating between zero and π. We identify the crucial role of the linear gain saturation for the existence of these robust molecules independently of their level.
AB - We numerically demonstrate the existence of a discrete family of robust dissipative soliton bound state solutions (soliton molecules) in a mode-locked fiber laser with an instantaneous saturable absorber in the normal dispersion domain. For a certain domain of the small-signal gain, we obtain a robust first-level bound state with almost constant separation where the phase of the two pulses evolves independently. Moreover, their phase difference can evolve either periodically or chaotically depending on the small-signal gain. Interestingly, higher level bound states exhibit a fundamentally different dynamics. They represent oscillating solutions with a phase difference alternating between zero and π. We identify the crucial role of the linear gain saturation for the existence of these robust molecules independently of their level.
UR - http://www.scopus.com/inward/record.url?scp=70350391630&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.80.043829
DO - 10.1103/PhysRevA.80.043829
M3 - Article
SN - 1050-2947
VL - 80
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 043829
ER -