Nonlinear periodic lattices occur in a large variety of systems, such as biological molecules,
nonlinear optical waveguides, solid-state systems and Bose–Einstein condensates. The …

Optical pulses—wave-packets—propagating in a linear medium have a natural tendency to
broaden in time (dispersion) and space (diffraction). Such broadening can be eliminated in a …

We analyze self-trapping of one-dimensional optical beams in photorefractive, photovoltaic
media for open-and closed-circuit realizations. We show that a passive load (resistor) in the …

We provide a comprehensive experimental and theoretical study of incoherently coupled
photorefractive spatial-soliton pairs in all three possible realizations: bright–bright, dark …

In aquatic systems, the concept of the 'microbial loop'is invoked to describe the conversion of
dissolved organic matter to particulate organic matter by bacteria. This process mediates the …

Optical spatial solitons are self-trapped optical beams that exist by virtue of the balance
between diffraction and nonlinearity. They propagate and interact with one another while …

We report the observation of three-dimensional spiraling collision of interacting two-
dimensional spatial solitons. The solitons are photorefractive screening solitons and are …

We report the observation of incoherent collisions between two-dimensional bright
photorefractive screening solitons. The solitons remain intact and do not exchange energy …

It is almost common knowledge now that particles also possess properties of waves. But,
can localized wave-packets behave and interact like particles? This article is dedicated to …

We study theoretically and experimentally the properties of waveguides induced by one-
dimensional steady-state photorefractive screening solitons. We show that the number of …