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Open Access item Experimental Evidence of Stochastic Resonance in an Excitable Optical System

Authors:Marino, Francesco
Giudici, Massimo
Barland, Stéphane
Balle, Salvador
Keywords:[PACS] Noise, [PACS] Dynamical laser instabilities; noisy laser behavior
Issue Date:10-Jan-2002
Publisher:American Physical Society
Citation:Physical Review Letters 88(4): 040601 (2002)
Abstract:Experimental evidence of stochastic resonance in an excitable optical system is reported. We apply a sinusoidal forcing to the system and, for a finite external noise level, we find a frequency for which the excitable pulsing occurs periodically at the frequency imposed by the modulation. This resonant frequency matches the inverse of the average escape time of the stochastically driven system (i.e., without forcing). The same resonance is found by varying the noise level for fixed forcing frequencies. We discuss different indicators in order to describe quantitatively the degree of resonance.
Description:4 pages, 5 figures.-- PACS nrs.: 05.40.Ca, 42.60.Mi.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevLett.88.040601
Appears in Collections:(IMEDEA) Artículos

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