Soliton molecules in femtosecond fiber lasers : universal binding mechanism and direct electronic control

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Sequences of ultrashort pulses form the basis of extremely precise laser applications ranging from femtosecond spectroscopy, to material microprocessing, to biomedical imaging. Dynamic patterns of temporal solitons—termed “soliton molecules”—inside mode-locked cavities provide yet unexplored means for generating reconfigurable arrangements of ultrashort pulses. Here, we demonstrate the external control of solitonic bound states in widespread erbium-doped fiber lasers via direct electronic modulation of the semiconductor pump source. This straightforward approach allows for switching between discrete soliton doublet states of picosecond separations, employing and relying on laser-intrinsic soliton interactions. We analyze the externally induced dynamics based on real-time switching data acquired by time-stretch dispersive Fourier transform spectroscopy and identify a universal bound-state formation mechanism different from broadly considered models. Owing to the ease of implementation and its intrinsic tunability, our control scheme is readily applicable to various laser platforms enabling, e.g., rapid multipulse measurements and tailored nonlinear light–matter interactions.

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ISO 690NIMMESGERN, Luca, Cornelius BECKH, Hannes KEMPF, Alfred LEITENSTORFER, Georg HERINK, 2021. Soliton molecules in femtosecond fiber lasers : universal binding mechanism and direct electronic control. In: Optica. Optica Publishing Group. 2021, 8(10), pp. 1334-1339. eISSN 2334-2536. Available under: doi: 10.1364/OPTICA.439905
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@article{Nimmesgern2021Solit-55456,
  year={2021},
  doi={10.1364/OPTICA.439905},
  title={Soliton molecules in femtosecond fiber lasers : universal binding mechanism and direct electronic control},
  number={10},
  volume={8},
  journal={Optica},
  pages={1334--1339},
  author={Nimmesgern, Luca and Beckh, Cornelius and Kempf, Hannes and Leitenstorfer, Alfred and Herink, Georg}
}
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