Coloquio del 22/04/2015
Mixed-mode oscillations in Q-switched CO2 lasers
Benemérita Universidad Autónoma de Puebla, México
(Av. Universitaria cdra. 18, San Miguel, Lima)
Fecha y hora:
Miércoles 22/04/2015, 10:00 a.m.
We consider the origin of mixed-mode oscillations and related bifurcations in some laser models that describe CO2 monomode lasers with saturable absorbers. Our study indicates that the presence of isolas of periodic mixed-mode oscillations, as the pump parameter and the cavity-frequency detuning change, is inherent to Q-switched CO2 monomode laser models. We compare these models (dual four-level model, 3:2 model, and a CO_2 laser model for fast saturable absorbers) and find similarities as well as qualitative differences, such as the different nature of the homoclinic tangency to a relevant unstable periodic orbit, where the Gavrilov-Shilnikov theory and its extensions may hold. (Click aquí para ver el afiche.)
Ingreso libre. Habrá café y galletas.