Experimental Study of Noise-induced Phase Synchronization in Vertical-cavity Lasers

Details Experimental Study of Noise-induced Phase Synchronization in Vertical-cavity Lasers Experimental Study of Noise-induced Phase Synchronization in Vertical-cavity Lasers

2003-03-05

arxiv.org/abs/cond-mat/0303084v2

Phys. Rev. E 68, 020101 R (2003)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.68.020101

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 on different waveforms 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.

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