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Synchronized multi-wavelength soliton fiber laser via intracavity group delay modulation
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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8
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Nature Communications, Volume 12, issue 1
Abstract
Locking of longitudinal modes in laser cavities is the common path to generate ultrashort pulses. In traditional multi-wavelength mode-locked lasers, the group velocities rely on lasing wavelengths due to the chromatic dispersion, yielding multiple trains of independently evolved pulses. Here, we show that mode-locked solitons at different wavelengths can be synchronized inside the cavity by engineering the intracavity group delay with a programmable pulse shaper. Frequency-resolved measurements fully retrieve the fine temporal structure of pulses, validating the direct generation of synchronized ultrafast lasers from two to five wavelengths with sub-pulse repetition-rate up to similar to 1.26 THz. Simulation results well reproduce and interpret the key experimental phenomena, and indicate that the saturable absorption effect automatically synchronize multi-wavelength solitons in despite of the small residual group delay difference. These results demonstrate an effective approach to create synchronized complex-structure solitons, and offer an effective platform to study the evolution dynamics of nonlinear wavepackets.
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| openaire: EC/H2020/820423/EU//S2QUIP | openaire: EC/H2020/834742/EU//ATOP | openaire: EC/H2020/965124/EU//FEMTOCHIP
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Mao, D, Wang, H, Zhang, H, Zeng, C, Du, Y, He, Z, Sun, Z & Zhao, J 2021, 'Synchronized multi-wavelength soliton fiber laser via intracavity group delay modulation', Nature Communications, vol. 12, no. 1, 6712. https://doi.org/10.1038/s41467-021-26872-x