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Cross-correlation of multiplicative and additive noises in a single-mode laser white-gain-noise model and correlated noises induced transitions

✍ Scribed by Li Cao; Da-jin Wu

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
111 KB
Volume
260
Category
Article
ISSN
0375-9601

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✦ Synopsis

We examine the mechanisms of cross-correlation of white multiplicative noise and white additive noise in a single-mode laser and establish a white-gain-noise model containing such a cross-correlation. We show that the cross-correlation between the white multiplicative noise and the white additive noise causes the phase of the laser field being locked at a fixed value, in contrast to that the phase diffuses freely when the cross-correlation is zero. Consequently, the laser intensity becomes decoupled from the phase and a closed form of Langevin equation is obtained for the intensity. Studying the steady intensity distribution, we find a new phase and re-entrant phase transition that were absent in the white-gain-noise model without cross-correlation.

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