Reconstruction of blurred images by controlled formation of spatial solitons.

Diffracted digital images are reconstructed by excitation of spatial solitons in a bulk chi((2)) crystal, in the regime of single-pass parametric amplification of the quantum noise.

Observation of quadratic optical vortex solitons

We report on the generation of stable dark-vortex solitons in large-phase-mismatched second-harmonic generation of self-defocusing type, sustained by a combined effect of transverse walk-off and finite beam size.

Pixellike parametric generator based on controlled spatial-soliton formation.

We report the observation of a stable matrix of diffraction-limited solitary beams in a monolithic, single-pass, parametric amplifier pumped by a spatially modulated beam.

Ultrafast addressing by use of spatial solitons in traveling-wave parametric amplification.

We demonstrate that single, narrow solitary beams can be locally excited in a large-beam pump field and that their position is adjustable within a 50-cell matrix by use of a 15-pJ seeding signal as an addressing control parameter.