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Super-Resolution and Reconstruction of Sparse Sub-Wavelength Images
Snir Gazit, Alexander Szameit, Yonina C. Eldar +1
We use compressed sensing to demonstrate theoretically the reconstruction of sub-wavelength features from measured far-field, and provide experimental proof-of-concept. The methods…
Nonlinearity-induced broadening of resonances in dynamically modulated couplers
A. Szameit, Y. V. Kartashov, M. Heinrich +7
We report the observation of nonlinearity-induced broadening of resonances in dynamically modulated directional couplers. When the refractive index of the guiding channels in the c…
Inhibition of light tunneling in waveguide arrays
A. Szameit, Y. V. Kartashov, F. Dreisow +7
We report the observation of almost perfect light tunneling inhibition at the edge and inside laser-written waveguide arrays due to band collapse. When the refractive index of the…
Observation of two-dimensional defect surface solitons
A. Szameit, Y. V. Kartashov, M. Heinrich +7
We report on the experimental observation of two-dimensional solitons located in a defect channel at the surface of a hexagonal waveguide array. The threshold power for the excitat…