Il Nuovo Cimento D

, Volume 17, Issue 7, pp 803–810

Stochastic resonance in a laser with saturable absorber

Authors

  • L. Guidoni
    • Dipartimento di FisicaUniversità di Pisa and INFM, Unità di Pisa
  • R. Mannella
    • Dipartimento di FisicaUniversità di Pisa and INFM, Unità di Pisa
  • V. Isaia
    • Dipartimento di FisicaUniversità di Pisa and INFM, Unità di Pisa
  • P. Verkerk
    • Dipartimento di FisicaUniversità di Pisa and INFM, Unità di Pisa
  • E. Arimondo
    • Dipartimento di FisicaUniversità di Pisa and INFM, Unità di Pisa
Article

DOI: 10.1007/BF02451837

Cite this article as:
Guidoni, L., Mannella, R., Isaia, V. et al. Il Nuovo Cimento D (1995) 17: 803. doi:10.1007/BF02451837

Summary

We have investigated, experimentally and theoretically, the occurrence of stochastic resonance (SR) in a laser with saturable absorber: a non-linear optical system presenting optical bistability and self-pulsed regimes for the laser output intensity. In the optical-bistability regime we have obtained an excellent demonstration of SR by studying Fourier spectra and residence time distributions; operating just below the Hopf bifurcation that originates pulsed periodic regime we have obtained experimental evidence of the SR phenomenon. For operation close to the Hopf bifurcation, the theoretical analysis (performed through numerical simulations) has demonstrated that simultaneous presence of noise and periodic forcing generates excursions far from equilibrium; from the locking between these excursions and periodic forcing the SR phenomenon may arise.

PACS 42.65

Nonlinear optics

PACS 05.40

Fluctuation phenomena, random processes, and Brownian motion

PACS 01.30.Cc

Conference proceedings
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Copyright information

© Società Italiana di Fisica 1995