Инд. авторы:	Xu G., Garnier J., Mussot A., Trillo S., Churkin D., Tarasov N., Turitsyn S., Picozzi A.
Заглавие:	Weak Langmuir optical turbulence in a fiber cavity
Библ. ссылка:	Xu G., Garnier J., Mussot A., Trillo S., Churkin D., Tarasov N., Turitsyn S., Picozzi A. Weak Langmuir optical turbulence in a fiber cavity // Physical Review A - Atomic, Molecular, and Optical Physics. - 2016. - Vol.94. - Iss. 1. - Art.013823. - ISSN 1050-2947. - EISSN 1094-1622.
Внешние системы:	DOI: 10.1103/PhysRevA.94.013823; SCOPUS: 2-s2.0-84978123728;
Реферат:	eng: We study theoretically and numerically the dynamics of a passive optical fiber ring cavity pumped by a highly incoherent wave: an incoherently injected fiber laser. The theoretical analysis reveals that the turbulent dynamics of the cavity is dominated by the Raman effect. The forced-dissipative nature of the fiber cavity is responsible for a large diversity of turbulent behaviors: Aside from nonequilibrium statistical stationary states, we report the formation of a periodic pattern of spectral incoherent solitons, or the formation of different types of spectral singularities, e.g., dispersive shock waves and incoherent spectral collapse behaviors. We derive a mean-field kinetic equation that describes in detail the different turbulent regimes of the cavity and whose structure is formally analogous to the weak Langmuir turbulence kinetic equation in the presence of forcing and damping. A quantitative agreement is obtained between the simulations of the nonlinear Schrödinger equation with cavity boundary conditions and those of the mean-field kinetic equation and the corresponding singular integrodifferential reduction, without using adjustable parameters. We discuss the possible realization of a fiber cavity experimental setup in which the theoretical predictions can be observed and studied. © 2016 American Physical Society.
Ключевые слова:	Pumping (laser); Shock waves; Turbulence; Adjustable parameters; Incoherent solitons; Langmuir turbulence; Mean-field kinetic equations; Quantitative agreement; Spectral singularities; Turbulent behavior; Turbulent dynamics; Fibers; Optical fibers; Nonlinear equations; Kinetics; Kinetic theory; Kinetic energy; Integral equations; Optically pumped lasers; Fiber lasers;
Издано:	2016
Физ. характеристика:	013823