Visualization of the Effect of an Impurity on the Optical Homogeneity of Lithium Niobate Doped with Boron Cations

Abstract:

The laser conoscopy method confirms the high optical uniformity of LiNbO₃:B crystals in the range of B₂O₃ concentrations from 0.008 to 1.24 mol. %. Minor signs of anomalous optical biaxiality appear in the conoscopic patterns of crystals at boron concentrations of 0.12 and 0.83 mol. % at a laser power of 90 mW. The maximum value of the angle of anomalous optical axes for the studied samples is 2V = 10 ́ for the sample (0.12 mol. %), аnd the value of anomalous birefringence corresponds to ∆n = 0.02·10^-5.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 65-70
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.65
• Online since: May 2021
• Authors: O. Pikoul*, Nikolay V. Sidorov, Mikhail N. Palatnikov
• Keywords: Boron Cations, Conoscopic Patterns, Lithium Niobate Single Crystals, Optical Homogeneity

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