The concept of random lasers exploiting multiple scattering of photons in an amplifying
disordered medium in order to generate coherent light without a traditional laser resonator …

The nonlinear propagation of coherent optical fields has been extensively explored in the
framework of nonlinear optics, while the linear propagation of incoherent fields has been …

Modern high-power lasers exhibit a rich diversity of nonlinear dynamics, often featuring
nontrivial co-existence of linear dispersive waves and coherent structures. While the …

Classical nonlinear waves exhibit, as a general rule, an irreversible process of
thermalization toward the Rayleigh–Jeans equilibrium distribution. On the other hand …

An important group of nonlinear processes in optical fibre involve the mixing of four waves
due to the intensity dependence of the refractive index. It is customary to distinguish …

Understanding turbulent flows arising from random dispersive waves that interact strongly
through nonlinearities is a challenging issue in physics. Here we report the observation of a …

The long-standing and controversial Fermi-Pasta-Ulam problem addresses fundamental
issues of statistical physics, and the attempt to resolve the mystery of the recurrences has led …

We report the direct observation of the onset of turbulence in propagating one-dimensional
optical waves. The transition occurs as the disordered hosting material passes from being …

We report random noise pulsed regime of an ytterbium-doped fiber laser arranged in
common Fabry-Perot configuration. We show that the laser output obeys the photon statistics …

The long-term behavior of a modulationally unstable conservative nonintegrable system is
known to be characterized by the soliton turbulence self-organization process. We consider …