Self-starting mode-locking in an all-PM Yb-doped fiber laser oscillator enabled by a 3x3 nonlinear optical lossy loop mirror
Mateusz Pielach,
Agnieszka Jamrozik,
Katarzyna Krupa
et al.
Abstract:Artificial saturable absorbers based on loop mirrors often suffer from a not self-starting mode-locking operation. It is usually necessary to provide an additional phase shift in the loop, guaranteeing repeatable initiation of the pulsed regime. 3x3 even fiber couplers have recently enabled the introduction of a phase shift in an all-fiber loop mirror architecture. Until now, mode-locking induced by a 3x3 fiber coupler has been associated only with nonlinear amplifying loop mirrors. Here, we present a self-sta… Show more
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