Dynamical modelling of measured time series from a Q-switched CO2 laser

Year: 2003

Authors: Horbelt W., Timmer J., Bunner M.J., Meucci R., Ciofini M.

Autors Affiliation: Fakultät für Physiks, Albert-Ludwings-Universität, Hermann-Herder-Str. 3, 79104 Freiburg i.Br., Germany;
EPCOS AG., Anzinger Str. 13, 81617 München, Germany;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: The transient dynamics of a Q-switched CO2 laser is modelled quantitatively on the base of the four level model, a five dimensional nonlinear system of ordinary differential equations. Using the multiple shooting technique, internal parameters of the laser are estimated and the unobserved time courses of the population densities are constructed. For excitations barely above the laser threshold large pulse variations are identified as an effect of small variations of the pump parameter. (C) 2002 Elsevier Science Ltd. All rights reserved.

Journal/Review: CHAOS SOLITONS & FRACTALS

Volume: 17 (2-3)      Pages from: 397  to: 404

KeyWords: Carbon dioxide lasers; Nonlinear equations; Parameter estimation; Q switched lasers; Time series analysis, Pulse variations, Differential equations
DOI: 10.1016/S0960-0779(02)00379-X

Citations: 3
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