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9 July 2001 Temperature dependence of refractive indices of LiNbO3, LiTaO3 and (Ba,Na)NbO3 relative crystals: similarity and difference
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Abstract
Detailed refractive indices measurements of transparent LiNbO3, LiTaO3 and (Ba,Na)NbO3 crystals in the temperature region 20-700 degree(s)C are reported. It is obtained that, besides the similarity in chemical compound and structure, optical properties of these crystals are different. The important common feature of lithium niobate and lithium tantalate crystal is dispersion of thermooptical coefficients. It is shown that phase transitions with different character take place at approximately 600 degree(s) in all measured crystals. Phase transitions are accompanied by such optical appearances as diffraction and coexistence of phases.
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Ivetta T. Bodnar and Victor P. Yarunichev "Temperature dependence of refractive indices of LiNbO3, LiTaO3 and (Ba,Na)NbO3 relative crystals: similarity and difference", Proc. SPIE 4467, Complex Mediums II: Beyond Linear Isotropic Dielectrics, (9 July 2001); https://doi.org/10.1117/12.432948
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