Prof. Masoller’s research line on nonlinear dynamics of semiconductor lasers

Semiconductor lasers are important practical devices, widely used in datacom, telecom, biomedical applications (imaging, sensors), etc. While “solitary” lasers emit a stable output, under external perturbations semiconductor lasers display a rich variety of nonlinear behaviors. The aim of the experimental and numerical work done in our lab is to advance the understanding of nonlinear phenomena induced by optical feedback and current modulation.	Top: Semiconductor Laser lab (you can find a video of the lab here). Bottom: Time series of the laser intensity displaying feedback-induced spikes (you can find here a video of the intensity dynamics when the pump current is increased) and speckle image recorded at the output of a multimode optical fiber.
Recent publications Effect of current modulation on the coherence of a semiconductor laser with optical feedback M. Duque-Gijon, C. Masoller, J. Tiana-Alsina Optics Express 32, 34721 (2024) Characterizing the spike timing of a chaotic laser by using ordinal analysis and machine learning B. R. R. Boaretto, E. E. N. Macau, C. Masoller Chaos 34, 043108 (2024) Recent presentations 6th International Conference on Application of Optics and Photonics (AOP 2024), Aveiro, Portugal July 2024 Invited talk: Binary classification of low resolution images using the collective modes of a 2D array of photonic crystal nanolasers Funding ICREA ACADEMIA, Catalan Government (2021-2025) Information Processing and Sensing with Photonic Neurons, European Office of Aerospace Research and Development (EOARD) reference number: FA8655-24-1-7022 (2024-2027)
Awards In 2016 C. Masoller was elected Fellow of OSA (presently OPTICA) “For contributions in the area of nonlinear dynamics of optical systems”.

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