Experimental study of noise-induced phase synchronization in vertical-cavity lasers

Year: 2003

Authors: Barbay S., Giacomelli G., Lepri S., Zavatta A.

Autors Affiliation: Laboratoire de Photonique et de Nanostructures, CNRS-UPR 20, Route de Nozay, 91460, Marcoussis, France;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Istituto Nazionale di Fisica della Materia – UdR Firenze, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy;
Dipartimento di Energeta “S. Stecco” Via S. Marta 3, 50139 Firenze, Italy;
Dipartimento di Sistemi e Informatica,Via S. Marta 3, 50139 Firenze, Italy

Abstract: We report the experimental evidence of noise-induced phase synchronization in a vertical-cavity laser. The polarized laser emission is entrained with the input periodic pump modulation when an optimal amount of white, Gaussian noise is applied. We characterize the phenomenon, evaluating the average frequency of the output signal and the diffusion coefficient of the phase difference variable. Their values are roughly independent of the different wave forms of periodic input, provided that a simple condition for the amplitudes is satisfied. The experimental results are compared with numerical simulations of a Langevin model.


Volume: 68 (2)      Pages from: 020101  to: 020101

KeyWords: Computer simulation; Light emission; Light polarization; Mathematical models; Signal processing; Synchronization; White noise, Gaussian noise; Langevin model; Phase synchronization; Vertical-cavity lasers, Lasers; Stochastic resonance; Systems; Force
DOI: 10.1103/PhysRevE.68.020101

Citations: 13
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