Effect of Gain-Dependent Phase Shift on Fiber Laser Synchronization

Abstract

Abstract-Recent experiments have demonstrated synchronization of fiber laser arrays at low and moderate pump levels. It has been suggested that a key dynamical process leading to synchronized behavior is the differential phase shift induced by the gain media. We explore theoretically the role of this effect in generating inphase dynamics. We find that its presence can substantially enhance the degree of inphase stability to an extent that could be practically important. At the same time, our analysis shows that a gain-dependent phase shift is not a necessary ingredient in the dynamical selection of the inphase state, thus, leading us to reconsider the essential mechanism behind inphase selection in fiber laser arrays.

High peak-power Q-switched all-fiber laser with tunable ns-us pulse durations and Hz-MHz repetition rates

“…the second is master oscillator power amplifier (MOPA) configurations, which obtain nanosecond pulse duration by amplifying the seeds laser with low power and excellent parameter. Another approach is self-organized coupling to generate pulse output such as Fourier transform cavities， self-filtering cavities，Michelson interferometer cavities and mutual-injection configurations [10,11,12,13,14] . however, these demonstrations have a free-space design and a limited range of pulse durations and repetitions rates.…”

Self-Synchronization of Laser Modes and Multistability in Quantum Cascade Lasers

“…Phase coupling of transverse modes in lasers has been extensively studied before, with the most recent surge of interest to this topic stimulated by applications in communications and optical information processing (chaos synchronization, control of pattern formation, spatial and polarization entanglement), see e.g. [2,[12][13][14]. However, synchronization was achieved previously by periodic modulation of laser parameters or external/mutual optical coupling.…”