2 papers
cond-mat.mes-hall2008
Speckle instability: coherent effects in nonlinear disordered media
Benoit Gremaud, Thomas Wellens
We numerically investigate the properties of speckle patterns formed by nonlinear point scatterers. We show that, in the weak localization regime, dynamical instability appears, ev…
cond-mat.mes-hall2004
Coherent Backscattering with Nonlinear Atomic Scatterers
T. Wellens, B. Gremaud, D. Delande +1
We study coherent backscattering of a quasi-monochromatic laser by a dilute gas of cold two-level atoms. We consider the perturbative regime of weak intensities, where nonlinear ef…