High frequency stochastic resonance (SR) phenomena, associated with fluctuational transitions between coexisting periodic attractors, have been investigated experimentally in an electronic model of a single-well Duffing oscillator which is bistable in a nearly resonant field of frequency omega(F). It is shown that, with increasing noise intensity, the signal-to-noise ratio (SNR) for a signal due to a weak trial force of frequency OMEGA approximately omega(F) at first decreases, then increases, and finally decreases again at higher noise intensities: The behavior is similar to that observed previously for conventional (low-frequency) SR in systems with static bistable potentials. The stochastic enhancement of the SNR of an additional signal at the mirror-reflected frequency \OMEGA-2omega(F)\ has also been observed, in accordance with theoretical predictions. Relationships with phenomena in nonlinear optics are discussed.
|Autori:||DYKMAN MI; LUCHINSKY DG; MANNELLA R; MCCLINTOCK PVE; STEIN ND; STOCKS NG|
|Titolo:||HIGH-FREQUENCY STOCHASTIC RESONANCE IN PERIODICALLY DRIVEN SYSTEMS|
|Anno del prodotto:||1993|
|Appare nelle tipologie:||1.1 Articolo in rivista|