Second harmonic generation is studied in samples of LiTaO3 powder ceramics with different lithium concentrations (48.8 and 49.3%) under excitation by a femtosecond laser at a wavelength of 1.026 nm. The dependence of the second harmonic integral power on the incident radiation power is measured, and a method for estimating the nonlinearity coefficient and its homogeneity in green-body ceramics is proposed.
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This work was supported by the Russian Science Foundation, project no. 19-12-00242.
The authors declare that they have no conflict of interest.
Translated by M. Basieva
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Leonov, S.O., Bastamova, M.A., Sidorov, N.V. et al. Localized Second Optical Harmonic in Nonlinear Optical Ceramics Excited by a Femtosecond Laser. Opt. Spectrosc. 127, 629–633 (2019). https://doi.org/10.1134/S0030400X19100151