Specific complex-oxide crystals with strong nonlinear absorption and nonlinear refraction as promising optical materials

• Published in: Optical materials Vol. 121; p. 111493
• Main Authors: Guichaoua, Dominique, Syvorotka, Ihor, Solskii, Ivan, Syvorotka, Natalia, Waszkowska, Karolina, Andrushchak, Anatoliy, Sahraoui, Bouchta
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2021
• Subjects: Complex oxide crystal; Nonlinear absorption; Nonlinear optics; Nonlinear refraction; Optical limiting; Z-scan technique; Optical limiting; Z-scan technique; Complex oxide crystal; Nonlinear absorption; Nonlinear refraction; Nonlinear optics
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2021.111493

In the present work the third-order nonlinear optical (NLO) properties of the complex-oxides crystals, including nonlinear absorption (NLA) and nonlinear refraction (NLR) are performed by the Z-scan technique. The non-centrosymmetric lithium niobate (LiNbO3) and lithium tantalite (LiTaO3) and centrosymmetric cadmium tungstate (CdWO4), calcium tungstate (CaWO4) and calcium molybdate (CaMoO4) single crystals were used for experimental investigation. The main nonlinear optical parameters, such as the two-photon absorption coefficient β, the nonlinear refractive index n2 and third-order nonlinear susceptibility for all investigated crystals are evaluated at different wavelengths λ: 1064 nm and 532 nm. Herein, the influence of λ and crystal orientation of third-order NLO properties on complex-oxides crystals is discussed. •Growth of new complex oxide crystals and their spectroscopic properties.•Investigation of the nonlinear optical effects by the Z-scan technique.•Strong saturable absorption and reverse saturable absorption of complex oxide crystals.•Self-focusing and self-defocusing properties determined by positive and negative refractive index n2 of studied crystals.