We report the use of an optoacoustically mode-locked fiber laser to create hundreds of temporal trapping potentials in parallel, within each of which multiple optical solitons can be isolated and manipulated to interact using a variety of control methods. Using these parallel “reactors”, we achieved on-demand synthesis and dissociation of soliton molecules both globally and individually and unfolded a novel panorama of stochastic soliton dynamics. Moreover, statistical analysis based on the massive dynamic events has revealed matter-light analogy on a collective level, suggesting that the soliton molecule dynamics follow classical theory of chemical kinetics.
We report on the development of large-core Yb-doped fibers with up to 100 μm core diameter and present first experimental results for high peak power amplification. The material for core and pump cladding was fabricated by Powder Sinter Technology. Using a high Al concentration we achieved a numerical aperture (NA) of 0.21 of the pump cladding and a core NA below 0.1. The rod-type fiber exhibits high pump absorption. Using a 0.55 m short fiber sample as the main amplifier in a 3-stage ns pulsed fiber Master Oscillator Power Amplifier system we achieved 3 ns output pulses with 360 kW peak power and 2 mJ pulse energy. We observed suppressed Stimulated Raman Scattering with respect to the signal pulses, which offers the possibility of further power scaling of such fiber amplifier systems.
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