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We demonstrate a ring-shaped Bessel-like photonic lattice akin to a photonic bandgap fiber with a low-index core. While the lattice is optically induced with self-defocusing nonlinearity, bandgap guidance of a probe beam is clearly observed.
We report the preliminary operation of an optical lattice clock with Sr atoms. We describe a novel method for loading the lattice and report an optical resonance of width 260 Hz.
We observe experimentally nonlinear localization of beams in two-dimensional modulated Bessel-type photonic lattices with self-focusing nonlinear response.
We demonstrate experimentally all-optical beam steering in modulated photonic lattices produced by three wave interference in photorefractive crystals. We show that high spatial resolution can be achieved by combining dynamic beam steering with nonlinear self-localization.
Nonlinear defect-modes (defect-solitons) in optically-induced one-dimensional photonic lattices with a single-site repulsive defect are predicted and observed. These defect solitons bifurcate from linear defect modes and are fully stable.
We report the first experimental demonstration of ring-shaped Bessel-like photonic lattices and rotary solitons in such lattices. Transition from discrete diffraction to single-channel linear guidance or nonlinear self-waveguiding is clearly observed.
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