EPJ Web of Conferences
Volume 41, 2013XVIIIth International Conference on Ultrafast Phenomena
|Number of page(s)||3|
|Section||Optics, Optoelectronics, Measurement, Diagnostic, and Applications|
|Published online||13 March 2013|
First Measurement of the Non-instantaneous Response Time of a χ(3) Nonlinear Optical Effect
1 Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
2 Optoelectronics Research Centre, 33101 Tampere, Finland
3 Laser Zentrum Hannover, 30419 Hannover, Germany
4 Institut für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover, Germany
The third harmonic of a few-cycle pulse, generated at different dielectric surfaces, is investigated using interferometric frequency-resolved optical gating. We present direct experimental evidence for a non-instantaneous nonlinear response in a TiO2 thin film whereas surface third-harmonic generation in a SiO2 sample does not show any indication for non-instanteneity. To the best of our knowledge, this constitutes the first report of a non-instantaneous nonlinear optical response of a dielectric optical material.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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