Photonic Bloch oscillations and Zener tunneling in two-dimensional optical lattices

Physics – Optics

Scientific paper

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4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.96.053903

We report on the first experimental observation of photonic Bloch oscillations and Zener tunneling in two-dimensional periodic systems. We study the propagation of an optical beam in a square photonic lattice superimposed on a refractive index ramp, and demonstrate the tunneling of light from the first to the higher-order transmission bands of the lattice bandgap spectrum, associated with the spectral dynamics inside the first Brillouin zone and corresponding oscillations of the primary beam.

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