Many important processes in science involve the escape of a particle over a barrier. In this
review, we report, extend, and interpret various theories of noise-activated escape. We …

The book being reviewed is devoted to the rapidly developing in recent years section of
nonlinear optics and applied quantum electronics—the selfactions and interactions of light …

Publisher Summary Bistable operation in optical systems has been theoretically predicted
and sometimes experimentally observed in several situations, for instance, with two-mode …

We discuss a mean-field quantum-mechanical model which describes the dynamics of a
homogeneously broadened system of two-level atoms contained in a pencil-shaped …

Critical transitions are observed in many complex systems. This includes the onset of
synchronization in a network of coupled oscillators or the emergence of an epidemic state …

Abstract In an active ''microcavity''the condition of maximum ''enhancement''of spontaneous
emission corresponds to resonant coupling of atoms with a single field mode. We …

Phase transitions of thermal systems and the laser threshold were first connected more than
forty years ago. Despite the nonequilibrium nature of the laser, the Landau theory of thermal …

Over the past years the field of synergetics has been mushrooming. An ever-increasing
number of scientific papers are published on the subject, and numerous conferences all …

Bistability and pulsation at microwave frequencies are observed in CW GaAs semiconductor
lasers with inhomogeneous current injection. Inhomogeneous current injection is achieved …

This paper contains a brief overview of the main types of instability in laser systems. The
topics being discussed include the early spiking in solid-state lasers, single-mode lasers …