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Noise-enhanced optical heterodyning in an all-optical bistable system.

Research output: Contribution to journalJournal article


Journal publication date25/12/1995
JournalApplied Physics Letters
Journal number3
Number of pages3
Original languageEnglish


A new form of frequency-selective all-optical heterodyning at the difference frequency of two modulated laser beams, related to stochastic resonance, is reported. A noise-induced enhancement of the heterodyne signal and of the signal-to-noise ratio has been predicted and observed in an all-optical bistable system for the beams at different wavelengths.