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Material Surface Treatment for Design of Composite Optical Elements

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Abstract

The quality of surface treatment of different laser materials has been studied aimed at designing composite elements. We have shown that flatness of samples should be no worse than λ/10 and roughness no more than 1.0 nm. Characteristics of ion-beam etching were found that cause no roughness degradation: Ar ions, Eion = 800 eV, and grazing angle θ = 5°. Ytterbium-doped yttrium aluminum garnet composite elements (Yb:YAG), along with a terbium gallium garnet (TGG) magnetoactive crystal with sapphire monocrystals, have been designed.

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ACKNOWLEDGMENTS

This work was performed using the facilities of the Physics and Technology of Micro- and Nanostructures Center for Collective Use at the Institute for Physics of Microstructures of the Russian Academy of Sciences.

Funding

This work was supported by the Russian Foundation for Basic Research, project no. 19-02-00631.

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Correspondence to A. E. Pestov.

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The authors declare that they have no conflicts of interest.

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Translated by N. Podymova

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Zorina, M.V., Kuznetsov, I.I., Mikhaylenko, M.S. et al. Material Surface Treatment for Design of Composite Optical Elements. Tech. Phys. 65, 1828–1831 (2020). https://doi.org/10.1134/S1063784220110286

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  • DOI: https://doi.org/10.1134/S1063784220110286

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