Study of lapping and polishing performance on lithium niobate single crystals

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Abstract

Recently, the range of crystal materials used in industrial microelectronics has signifi-cantly increased. Lithium niobate single crystals are most often used in integrated optics, due to the high values of optical and electro-optical coefficients. An integral-optical circuit based on a lithium niobate single crystal is a key element in the production of local high-precision fiber-optic gyro-scopic devices used in civil and military aviation and marine technologies. In the process of production of an integral-optical circuit, the most labor-intensive operations are mechanical processing, such as lapping and polishing. Technological problems that arise while performing these operations are due to the physical and mechanical properties of the material, as well as target surface finish. This work shows the possibility to achieve the required surface quality of lithium niobate single crystal plates by mechanization of lapping and polishing process in this article.

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Muratov, K. R., Ablyaz, T. R., Gashev, E. A., Sidhu, S. S., & Shlykov, E. S. (2021). Study of lapping and polishing performance on lithium niobate single crystals. Materials, 14(17). https://doi.org/10.3390/ma14174968

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