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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:14 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
Chaotic properties of the laser beams
emitted by semiconductor lasers
Authors:
I.R. Andrei*, M. Bulinski, C.M. Ticos*, M.L. Pascu*
Affiliation:
a National Institute for Lasers, Plasma, and Radiation Physics, P.O. Box MG-36, Atomistilor str. 409, 077125 Magurele, Romania * e-mail: ionut.andrei@inflpr.ro
b Faculty of Physics, University of Bucharest, str. Atomistilor 405, 077125 Magurele, Romania
E-mail
ionut.andrei@inflpr.ro
Keywords:
Extended cavity - semiconductor laser, chaos control, low frequency fluctuation (LFF)
Abstract:
The radiation emitted by semiconductor lasers, optical coupled with an extended optical cavity and in presence of an optical feedback, shows nonlinear behaviors which are generic all named chaotic dynamics. This dynamics of the laser emission improves or worsens the beam quality depending of operation regimes and set parameters. The laser emission with a chaotic dynamics is of interest for information coding and transmission on optical carrier. In the present paper we show experimental data concerning the characterization of the chaotic emission of an extended cavity – semiconductor laser (ECSL) system. The chaotic dynamic control of the laser emission was obtained by injection current, temperature or feedback coefficient variation, at LFF regime (threshold injection current conditions).
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