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Determination of the threshold for instability in four-wave mixing mediated by Brillouin scattering

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3 Author(s)
Watkins, D.E. ; R. Signals & Radar Establ., Malvern, UK ; Scott, A.M. ; Ridley, Kevin D.

The threshold for instability in Brillouin-enhanced four-wave mixing has been experimentally determined as a function of both the phase mismatch and the ratio of the pump beam intensities and is shown to agree with theoretical modeling. The effective input noise intensity for four-wave mixing in the unstable regime is compared to the noise in a stimulated Brillouin scattering amplifier and is found to be higher by a factor of three in the forward direction. Competition between two input signals has been investigated, and it is shown that the signal which arrives first dominates the interaction in the unstable regime

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Quantum Electronics, IEEE Journal of  (Volume:26 ,  Issue: 12 )