https://doi.org/10.1140/epjd/s10053-023-00623-7
Regular Article – Optical Phenomena and Photonics
Microwave photonics via cavity solitons in injected broad-area semiconductor lasers with saturable absorber
1
Faculty of Physics, University of Tabriz, Tabriz, Iran
2
Department of Physics, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
Received:
18
September
2022
Accepted:
21
February
2023
Published online:
28
March
2023
Dynamical states of cavity solitons (CSs) in a broad-area semiconductor laser with intracavity saturable absorber are numerically investigated under the effect of an external cw injection. We show that they adopt period-one, multi-period, stable locking, and chaotic dynamics depending on the values of the injection amplitude and frequency detuning. These solutions are stable before spatiotemporal chaos sets in for larger injection strengths and detuning values. CSs in the period-1 regime perform phase noise-free and high-contrast intensity oscillations in the microwave domain which is tunable in a wide range of 
few to 446 GHz (with an acceptable drop in magnitude) by taking frequency detuning as the control parameter. The nonlinear dynamics of CSs in the period-1 regime exhibits remarkable feasibility to enhance microwave photonics and has not previously been studied in the nonlinear photonics literature.
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