Noise-enhanced synchronization of homoclinic chaos in a CO2 laser

Changsong Zhou*, J. Kurths, E. Allaria, S. Boccaletti, R. Meucci, F. T. Arecchi

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

63 Citations (Scopus)


Many chaotic oscillators have rather coherent phase dynamics but strong fluctuation in the amplitudes. Conversely, homoclinic chaos is characterized by quite regular spikes but strong fluctuation in their time intervals. We study the effects of noise on the synchronization of homoclinic chaos to a weak periodic signal and demonstrate numerically and experimentally in a [Formula presented] laser system that noise enhances synchronization of homoclinic chaos. The system exhibits both conventional resonance versus driving frequency and stochastic resonance with respect to noise intensity.

Original languageEnglish
Article number015205
Number of pages4
JournalPhysical Review E
Issue number1
Publication statusPublished - Jan 2003

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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