By using a three-dimensional finite-difference time-domain parallel code, the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, generated by a molecular dynamics code, is simulated. We calculate the static and dynamical light diffusion constant and the transmission in the presence of localized states. We numerically demonstrate the "modulational instability random laser": at high input peak power, energy is transferred to localized states from the input pulse, resulting in a power-dependent nonexponential time decay of the transmitted pulse.

Light diffusion and localization in three-dimensional nonlinear disordered media / Conti, Claudio; L., Angelani; Ruocco, Giancarlo. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 75:3(2007), p. 033812. [10.1103/physreva.75.033812]

Light diffusion and localization in three-dimensional nonlinear disordered media

CONTI, CLAUDIO;RUOCCO, Giancarlo
2007

Abstract

By using a three-dimensional finite-difference time-domain parallel code, the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, generated by a molecular dynamics code, is simulated. We calculate the static and dynamical light diffusion constant and the transmission in the presence of localized states. We numerically demonstrate the "modulational instability random laser": at high input peak power, energy is transferred to localized states from the input pulse, resulting in a power-dependent nonexponential time decay of the transmitted pulse.
2007
anderson localizations; nonlinear optics
01 Pubblicazione su rivista::01a Articolo in rivista
Light diffusion and localization in three-dimensional nonlinear disordered media / Conti, Claudio; L., Angelani; Ruocco, Giancarlo. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 75:3(2007), p. 033812. [10.1103/physreva.75.033812]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/237378
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