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  1. Article

    Open Access

    Far-field polarization signatures of surface optical nonlinearity in noncentrosymmetric semiconductors

    We analyse possibilities to quantitatively evaluate the surface second-order optical nonlinearity in noncentrosymmetric materials based on polarization-resolved analysis of far-field radiation patterns of seco...

    A. V. Pakhomov, F. J. F. Löchner, L. Zschiedrich, S. Saravi… in Scientific Reports (2020)

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    Article

    Change of the refractive index in PPLN waveguides due to the photorefractive effect

    In this work we report the results of the experimental investigation of the refractive index change due to the photorefractive effect in periodically poled lithium niobate (PPLN) Ti-diffused waveguides in depe...

    O. Kashin, M. Homann, V. Matusevich, F. Setzpfandt, T. Pertsch… in Applied Physics B (2011)

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    Article

    Nonlinear dynamics with higher-order modes in lithium niobate waveguide arrays

    We present theoretical and experimental studies on nonlinear beam propagation in lithium niobate waveguide arrays utilizing higher-order second harmonic bands. We find that the implementation of the higher-ord...

    F. Setzpfandt, D. N. Neshev, A. A. Sukhorukov, R. Schiek, R. Ricken… in Applied Physics B (2011)

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    Article

    Evaluation of gold nanowire pairs as a potential negative index material

    A metamaterial consisting of pairs of metallic nanowires, separated by a dielectric spacer, has been fabricated and spectrally characterized in the visible and near-infrared spectral domain. It is shown, that ...

    F. Garwe, C. Rockstuhl, C. Etrich, U. Hübner, U. Bauerschäfer… in Applied Physics B (2006)