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SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 7: Poster I

Q 7.9: Poster

Monday, March 6, 2023, 16:30–19:00, Empore Lichthof

Selective intracavity control of interlaced femtosecond soliton combs — •Julia A. Lang1, Luca Nimmesgern1, Sarah R. Hutter2, Alfred Leitenstorfer2, and Georg Herink11Universität Bayreuth, Deutschland — 2Universität Konstanz, Deutschland

Complex sequences of multiple solitons are observed in almost all ultrafast mode-locked laser, but their dynamics remain difficult to access, control, or eventually apply. In this contribution, we present deterministic control of relative soliton motion between two interlaced harmonic mode-locked frequency combs. We implement intra-cavity control by acousto-optic modulation allowing us to selectively address pulses in a 40 MHz Er:fiber laser. The soliton trajectories following the external stimulus are rapid, tuneable and deterministic. As shown in [1], intracavity feedback plays an important role in the formation of stable soliton molecules. In this work, we experimentally resolve and analyse the dynamics in the frame of soliton interaction with an effective binding potential. As a proof-of-concept, we demonstrate first steps towards the use of tuneable intracavity soliton motions for ultrafast pump-probe spectroscopy.

[1] Nimmesgern, Luca et al. Soliton molecules in femtosecond fiber lasers: universal binding mechanism and direct electronic control. Optica 8, 10 (2021).

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