Scientific Results

Polarization coding in CO2 lasers: Spatial and temporal behavior

Year: 2010

Authors: Meucci R., Al Naimee K.A., Abdalah S.F., Arecchi F.T., De Nicola S.

Autors Affiliation: CNR, Istituto Nazionale di Ottica Applicata, Firenze, Italy; Istituto di Cibernetica, Eduardo Caianiello, Pozzuoli(Na), Italy; Physics Department, College of Science, University of Baghdad, Baghdad, Iraq; High Institute of Telecommunications and Post, Salihiyah, Bghdad, Iraq

Abstract: We study the polarization dynamics in a CO2 laser, showing a transition from stable to bistable states and the presence of coherent resonance when noise is added. We discuss the role of optical feedback to achieve polarization stabilization or alternation between first order transverse modes. We discuss the potential applications of this dynamics showing that polarization of a given transverse mode can be controlled by means of a suitable polarized optical feedback. In this way, information can be encoded in the polarization process and it can be safely recovered at an identical laser receiver synchronized with the sender.

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KeyWords: Bi-stable state; Coding; Coherent resonances; First order; Laser receivers; Polarization coding; Polarization dynamics; Polarization stabilization; Potential applications; Temporal behavior; Transverse mode, Polarization; Synchronization, Feedback
DOI: 10.1109/COMPENG.2010.50

English