We report on a recent model introduced to describe the behaviour of light in a nonlinear active random medium, i.e. a random laser. The emitted radiation is described by a disordered mean-field Hamiltonian for the phases of the complex amplitudes of the electromagnetic field modes. Using the replica trick the thermodynamics can be exactly solved. A replica-symmetry breaking phase transition is predicted, corresponding to mode-locking processes in random lasers. The expected random laser phase diagram varying the pumping rate is reported, together with some perspectives opened by the present study.

A glassy model for random lasers / L., Angelani; Conti, Claudio; Ruocco, Giancarlo; F., Zamponi. - In: PHILOSOPHICAL MAGAZINE. - ISSN 1478-6435. - STAMPA. - 87:3-5(2007), pp. 587-595. [10.1080/14786430600865364]

A glassy model for random lasers.

CONTI, CLAUDIO;RUOCCO, Giancarlo;
2007

Abstract

We report on a recent model introduced to describe the behaviour of light in a nonlinear active random medium, i.e. a random laser. The emitted radiation is described by a disordered mean-field Hamiltonian for the phases of the complex amplitudes of the electromagnetic field modes. Using the replica trick the thermodynamics can be exactly solved. A replica-symmetry breaking phase transition is predicted, corresponding to mode-locking processes in random lasers. The expected random laser phase diagram varying the pumping rate is reported, together with some perspectives opened by the present study.
NONLINEAR OPTICS; NONLINEAR WAVES; SPIN GLASSES; RANDOM LASERS; COMPLEX SYSTEMS
01 Pubblicazione su rivista::01a Articolo in rivista
A glassy model for random lasers / L., Angelani; Conti, Claudio; Ruocco, Giancarlo; F., Zamponi. - In: PHILOSOPHICAL MAGAZINE. - ISSN 1478-6435. - STAMPA. - 87:3-5(2007), pp. 587-595. [10.1080/14786430600865364]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/238721
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