Based on experimental data on the shift of the fundamental absorption edge, we have quantitatively estimated the electro-optic coefficient r 13 in proton-exchanged waveguides containing different H x Li1–x NbO3 phases. The phase composition of the waveguides was determined based on IR reflectance and micro-Raman spectroscopy data. We established that the electro-optic properties of the waveguides depend on their phase composition. The results obtained allowed us to optimize the process for preparation of phase modulators based on channel waveguides in LiNbO3 crystals.
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*Report given at the International Conference on Crystal Optics, 23–26 September 2014, Mozyr, Belarus.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 82, No. 2, pp. 240–247, March–April, 2015.
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Kostritskii, S.M., Korkishko, Y.N., Fedorov, V.A. et al. Phase Composition and Electro-Optic Properties of Proton-Exchanged Waveguides in Lithium Niobate Crystals*. J Appl Spectrosc 82, 234–241 (2015). https://doi.org/10.1007/s10812-015-0091-2
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DOI: https://doi.org/10.1007/s10812-015-0091-2