Control of spectral extreme events in ultrafast fibre lasers by a genetic algorithm - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Laser and Photonics Reviews Année : 2023

Control of spectral extreme events in ultrafast fibre lasers by a genetic algorithm

Xiuqi Wu
  • Fonction : Auteur
Ying Zhang
  • Fonction : Auteur
Junsong Peng
  • Fonction : Auteur
Heping Zeng
  • Fonction : Auteur

Résumé

Extreme wave events or rogue waves (RWs) are both statistically rare and of exceptionally large amplitude. They are observed in many complex systems ranging from oceanic and optical environments to financial models and Bose-Einstein condensates. As they appear from nowhere and disappear without a trace, their emergence is unpredictable and non-repetitive, which make them particularly challenging to control. Here, we extend the use of genetic algorithms (GAs), which have been exclusively designed for searching and optimising stationary or repetitive processes in nonlinear optical systems, to the active control of extreme events in a fibre laser cavity. Feeding real-time spectral measurements into a GA controlling the electronics to optimise the cavity parameters, we are able to trigger wave events in the cavity that have the typical statistics of RWs in the frequency domain. This accurate control enables the generation of the optical RWs with a spectral peak intensity 32.8 times higher than the significant intensity threshold. A rationale is proposed and confirmed by numerical simulations of the laser model for the related frequency up- and down-shifting of the optical spectrum that are experimentally observed.

Dates et versions

hal-04201146 , version 1 (09-09-2023)

Identifiants

Citer

Xiuqi Wu, Ying Zhang, Junsong Peng, Sonia Boscolo, Christophe Finot, et al.. Control of spectral extreme events in ultrafast fibre lasers by a genetic algorithm. Laser and Photonics Reviews, In press, ⟨10.1002/lpor.202200470⟩. ⟨hal-04201146⟩
21 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More