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Author: Steinmeyer, Günter × End date: 2019 × Start date: 2010 × Subject: all-optical Kerr effect × WGL Institute: MBI ×

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    Saturation of the all-optical Kerr effect
    (Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2010) Brée, Carsten; Demircan, Ayhan; Steinmeyer, Günter
    Saturation of the intensity dependence of the refractive index is directly computed from ionization rates via a Kramers-Kronig transform. The linear intensity dependence and its dispersion are found in excellent agreement with complete quantum mechanical orbital computations. Higher-order terms concur with solutions of the time-dependent Schrödinger equation. Expanding the formalism to all orders up to the ionization potential of the atom, we derive a model for saturation of the Kerr effect. This model widely confirms recently published and controversially discussed experimental data and corroborates the importance of higher-order Kerr terms for filamentation.