Welcome to the homepage of the research group on Nonlinear Dynamics, Nonlinear Optics and Lasers (DONLL).
Our reserach Group belongs to the Department of Physics of the Universitat Politècnica de Catalonia (UPC). We are located in Gaia research building, in the Campus of Terrassa (Rambla Sant Nebridi 22, Terrassa).
The general goal of our group is to study the nature, effects and, as far as possible, technological applications of nonlinear phenomena in the fields of photonics, complex systems and biophysics.
In the case of photonics, special emphasis is put on structured materials, in particular photonic crystals, gain/loss modulated media, and lasers, as well as on semiconductor laser dynamics and ultra-short pulse interactions and diagnostics. Additionally, our research includes nonlinear x-ray wave mixing and methods to enhance the yield of extreme ultraviolet (EUV) high-harmonic generation (HHG). We actively propose experiments at XFELs and participate in their execution, combining theoretical modeling with experimental verification.
In the case of complex systems, we study complex networks (fundamentals and applications) and fracture dynamics in materials.
Finally, in the case of biophysics, attention is paid to neural excitability as well as to mesoscopic modelling of brain.
News
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During the annual research workshops of the Department of Physics at Universitat Politècnica de Catalunya, the organizing committee recognized outstanding doctoral research with its 2026 Best Poster...
Berta Martínez Wins 2026 Physics Department Research Award for Best Poster -
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The new doctors of the group depart to their new destinations for postdoctorals stages
Calçotada farewell for Maria and Salim! -
Round table was organized by PhotoniCAT Agenda for 11F, International Day of Women and Girls in Science.
Prof. Cojocaru and Prof. Masoller participate in round table about woman and girls in science -
The thesis was defended in Campus nord
Dr. Salim Benadouda i Ivars defended his thesis on 14/02/2024 -
Title: Pattern formation in time-delayed systems Wednesday February 12, in Gaia (TR14)
Invited seminar of Dr. Julian Javaloyes
