| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 21, Number 1, 2025
EOSAM 2024
|
|
|---|---|---|
| Article Number | 14 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/jeos/2025010 | |
| Published online | 12 March 2025 | |
Research Article
Type-I intermittency route to the chaos in passively Q-switched Tm:YLF laser emitting at 2.3 μm
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles Fabry, 91127 Palaiseau, France
* Corresponding author: frederic.druon@institutoptique.fr
Received:
31
December
2024
Accepted:
26
February
2025
We report on an original chaotic dynamic behavior of a Tm-doped Q-switched laser operating on the 3H4 → 3H5 transition emitting at 2.3 μm using a Tm:YLF crystal, with optional co-lasing at 1.9 μm via the ³F₄ → ³H₆ transition. This study specifically investigates the chaotic and intermittent dynamics originally observed in this laser. Experimental observations reveal an atypical type-I intermittency route to chaos, linked to cascade transitions and characterized using Poincaré maps, entropy calculations, and phase-space reconstructions. The analysis highlights synchronization losses between the Q-switched pulse train and relaxation oscillations in the 1.9 μm cascade laser as a driver of chaotic instabilities. These findings deepen the understanding of chaotic regimes in Tm-doped lasers and provide insights for optimizing the stability of MIR laser systems for advanced photonic applications. Further modeling is needed to fully elucidate the interplay of dual-wavelength dynamics and the observed chaotic behavior.
Key words: Solid state laser / MIR laser / Tm-doped laser / Q-switch laser
© The Author(s), published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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