Coloquio del 22/04/2015

Mixed-mode oscillations in Q-switched CO₂ lasers

Carlos Pando

Benemérita Universidad Autónoma de Puebla, México

Lugar:

Aula A308-309

(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.

Informes: coloquios@fisica.pucp.edu.pe