Experimental study of noise-induced phase synchronization in vertical-cavity lasers.
We report the experimental evidence of noise-induced phase synchronization in a vertical-cavity laser. The polarized laser emission is entrained with the input periodic pump modulation when an optimal amount of white, Gaussian noise is applied. We characterize the phenomenon, evaluating the average frequency of the output signal and the diffusion coefficient of the phase difference variable. Their values are roughly independent of the different wave forms of periodic input, provided that a simple condition for the amplitudes is satisfied. The experimental results are compared with numerical simulations of a Langevin model.
Barbay
Sylvain
S
Laboratoire de Photonique et de Nanostructures, CNRS-UPR 20, Route de Nozay, 91460 Marcoussis, France.
Giacomelli
Giovanni
G
Lepri
Stefano
S
Zavatta
Alessandro
A