Homoclinic dynamics of the vibronic laser
Anno: 2003
Autori: Gadomski W., Ratajska-Gadomska B., Meucci R.
Affiliazione autori: 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.
Giornale/Rivista: CHAOS SOLITONS & FRACTALS
Volume: 17 (2-3) Da Pagina: 387 A: 396
Parole chiavi: Crystal lattices; Laser applications; Parameter estimation; Pumps, Homoclinic dynamics, PhononsDOI: 10.1016/S0960-0779(02)00378-8Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui