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Article Dans Une Revue Frontiers in Photonics Année : 2023

Spontaneous mode locking of a multimode semiconductor laser under continuous wave operation

Résumé

Self-starting mode-locking is observed in a laser based on a compact III-V diode-pumped quantum-well surface-emitting semiconductor laser technology with a saturable-absorber-free but dispersive cavity. Continuous wave generation of picosecond pulses at a rate of 100 GHz is demonstrated by recording microwave intensity noises, beat frequency, time-resolved optical spectra, and intensity autocorrelation. Coherence of the pulse train is obtained through the frequency noise measurement of the demodulated beat note, demonstrating a timing jitter as low as 110 fs, near the quantum limit. Using a theoretical model based on a generalized Haus master equation, we demonstrate the existence of this mode locked state without the need for saturable absorption. The fundamental physical mechanism is the interplay between self-phase modulation and anomalous dispersion like in cavity soliton together with light–matter interaction-induced time symmetry breaking.
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Dates et versions

hal-04040037 , version 1 (27-11-2023)

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Baptiste Chomet, Stéphane Blin, Grégoire Beaudoin, Konstantinos Pantzas, Isabelle Sagnes, et al.. Spontaneous mode locking of a multimode semiconductor laser under continuous wave operation. Frontiers in Photonics, 2023, 4, ⟨10.3389/fphot.2023.1160251⟩. ⟨hal-04040037⟩
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