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DOI: 10.17586/1023-5086-2020-87-01-62-68
УДК: 535.1, 535.5
Temperature dispersions of refractive indices and absorption coefficients of KNbO3 and LiNbO3 crystals in the THz frequency range
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Publication in Journal of Optical Technology
Галуцкий В.В., Ивашко С.С. Температурные дисперсии показателей преломления и коэффициентов поглощения кристаллов ниобатов калия и лития, активированных ионами иттербия, эрбия и хрома, в терагерцовом диапазоне частот // Оптический журнал. 2020. Т. 87. № 1. С. 62–68. http://doi.org/10.17586/1023-5086-2020-87-01-62-68
Galutskiy V.V., Ivashko S.S. Temperature dispersions of refractive indices and absorption coefficients of KNbO3 and LiNbO3 crystals in the THz frequency range [in Russian] // Opticheskii Zhurnal. 2020. V. 87. № 1. P. 62–68. http://doi.org/10.17586/1023-5086-2020-87-01-62-68
V. V. Galutskiy and S. S. Ivashko, "Temperature dispersions of refractive indices and absorption coefficients of KNbO3 and LiNbO3 crystals in the THz frequency range," Journal of Optical Technology. 87(1), 50-55 (2020). https://doi.org/10.1364/JOT.87.000050
The temperature dispersions of refractive indices and absorption coefficients in the terahertz range for the spectra of Er3+Er3+-, Yb3+Yb3+-, and Cr3+Cr3+-activated potassium niobate and lithium niobate crystals, grown by the Czochralski method with liquid recharge, are considered. A strong temperature dependence for the refractive index of the LiNbO3:Er,Yb crystal was found—3.5×10−3K−13.5×10−3K−1. A minimum temperature dependence of 0.2×10−3K−10.2×10−3K−1 for the refractive index of the LiNbO3:Cr crystal was also obtained.
potassium niobate, lithium niobate, terahertz range
Acknowledgements:The research was supported by the Russian Foundation for Basic Research (19-42-230006 r_a); Ministry of Education and Science of the Russian Federation (8.4958.2017/BCh(17/28-t)).
OCIS codes: 300.6495, 190.0190
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