State dependent pseudo-resonances and excess noise


Papoff, F., D'Alessandro, G. and Oppo, G.Luca (2008) State dependent pseudo-resonances and excess noise. Physical Review Letters, 100, (12), 123905-[4pp]. (doi:10.1103/PhysRevLett.100.123905).

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Description/Abstract

We show that strong response to nonresonant modulations and excess noise are state dependent in generic nonlinear systems; i.e., they affect some output states but are absent from others. This is demonstrated in complex Swift-Hohenberg models relevant to optics, where it is caused by the non-normality of the linearized stability operators around selected output states, even though the cavity modes are orthogonal. In particular, we find the effective parameters that control excess noise and the response to modulations and show cases where these phenomena are enhanced by an order of magnitude.

Item Type: Article
ISSNs: 0031-9007 (print)
Keywords: lasers, swift-hohenberg equation, non-normal operators, sensitivity to noise
Subjects: Q Science > QA Mathematics
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics
ePrint ID: 50796
Date Deposited: 24 Apr 2008
Last Modified: 27 Mar 2014 18:34
URI: http://eprints.soton.ac.uk/id/eprint/50796

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