Homoclinic dynamics of the vibronic laser

Year: 2003

Authors: Gadomski W., Ratajska-Gadomska B., Meucci R.

Autors Affiliation: Laboratory of Physicochemistry of Dielectrics, Department of Chemistry, University of Warsaw, ul. Zwirki i Wigury 101, 02-089 Warsaw, Poalnd;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: Herewith we report on the nonlinear dynamics of the vibronic laser, it means the laser, in which the laser action is possible only due to phonons of the host crystal lattice. We have described such a system using five level model, in which the number of the coherently excited lattice phonons is included as one of the dynamical variables. We have shown that at certain values of control parameters, such as pump wavelengths and pump intensities, the system follows the homoclinic trajectory in the phase space and eventually passes to the chaotic state. It keeps traveling between two or more unstable fixed points. We have investigated the evolution of the homoclinic orbits with the change of the control parameters. The theoretical predictions have been proved by us experimentally in the short-cavity alexandrite laser. We demonstrate the homoclinic character of the laser output, occurring for different pump wavelengths and pump powers.
Instead there are the regions of parameters for which we usually observe the stable CW action and
pulsations can hardly be achieved.

Journal/Review: CHAOS SOLITONS & FRACTALS

Volume: 17 (2-3)      Pages from: 387  to: 396

KeyWords: Crystal lattices; Laser applications; Parameter estimation; Pumps, Homoclinic dynamics, Phonons
DOI: 10.1016/S0960-0779(02)00378-8

Citations: 4
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here