Thermal Poling of Silica
- Leibniz-Institut für Photonische Technologien e.V.
alexander [dot] strauss [at] ipht-jena [dot] de
Glass, an amorphous centrosymmetric material, naturally exhibits no second-order optical susceptibility (chi2). Therefore typical second-order effects such as electrooptic effect or second harmonic generation do not exist. During thermal poling we applied a high voltage (kV-range) on a silica sample, which was heated up before to 270-330°C. After cooling and switching off the voltage, a frozen-in electric field exists in the material (EDC~107 V/m). This electric field breaks the inversion symmetry, and in combination with the intrinsic third-order nonlinearity an effective susceptibility chi2eff ~ chi3*EDC arises. This poled samples were characterised by second harmonic measurements. We will report on the influence of different poling-parameters (voltage, length of time, temperature) on second harmonic generation, as well as on the stability of the generated second-order nonlinearity concerning UV-radiation, temperature and aging.
@inproceedings{strauss2005p53,
author = {Strauss, Alexander and Brueckner, Sven and Roepke, Ulrich and Bartelt, Hartmut},
title = {{Thermal Poling of Silica}},
booktitle = {DGaO-Proceedings 2005},
series = {DGaO-Proceedings},
eventtitle = {106. Jahrestagung der DGaO},
eventdate = {2005-05-17/2005-05-20},
venue = {Wrocław},
publisher = {Deutsche Gesellschaft für angewandte Optik e.V.},
year = {2005},
pages = {P53},
url = {https://dgao-proceedings.de/paper/106-p53}
}