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Abstract: We report on the experimental observation of two-dimensional surface waveslocalized at the edge or in the corner of femtosecond laser-written waveguidearrays in fused silica. Increasing the power of the input beam allows one toobserve a clear transition from a linear diffraction pattern to localizednonlinear surface states, which can exist at the interface only above a certainpower threshold.



Author: A. Szameit, Y. V. Kartashov, F. Dreisow, T. Pertsch, S. Nolte, A. Tunnermann, L. Torner

Source: https://arxiv.org/



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