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Abstract
The domain growth during polarization reversal with small round liquid electrodes has been studied in 0.5-mm-thick 36° Y-cut congruent lithium niobate, which is of practical interest for high average power nonlinear frequency conversion of ultra-short laser pulses. Studying the polarization reversal in constant field, we analyzed the time dependence of the switched domains fraction to obtain the domain nucleation probability and determine the activation field equal to 42 kV/mm. Studying the polarization reversal in rising field, we observed linear field dependence of the forward domain growth velocity with a threshold of 30.3 kV/mm.
Acknowledgements
The equipment of the Ural Center for Shared Use “Modern Nanotechnology” Ural Federal University was used. The work was supported by the Government of the Russian Federation (act 211, agreement 02.A03.21.0006). VS and AA are grateful for financial support of the Ministry of Science and Higher Education of the Russian Federation (state tasks 3.4993.2017/6.7 and 3.4973.2017/7.8). EN is grateful for the financial support of Fastlite through the convention n°163967 with CNRS.