Multispectral Anti-Reflection Coatings Based on YbF<sub>3</sub>/ZnS Materials on ZnGeP<sub>2</sub> Substrate by the IBS Method for Mid-IR Laser Applications
Mikhail Zinovev,
Nikolay N. Yudin,
Igor Kinyaevskiy,
Sergey Podzyvalov,
Vladimir Kuznetsov,
Elena Slyunko,
Houssain Baalbaki,
Denis Vlasov
Affiliations
Mikhail Zinovev
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
Nikolay N. Yudin
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
Igor Kinyaevskiy
Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Pr., 119991 Moscow, Russia
Sergey Podzyvalov
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
Vladimir Kuznetsov
Laboratory of Optical Crystals «LOC LLC», 634050 Tomsk, Russia
Elena Slyunko
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
Houssain Baalbaki
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
Denis Vlasov
Laboratory for Radiophysical and Optical Methods of Environmental Studies, National Research Tomsk State University, 634050 Tomsk, Russia
A multispectral anti-reflective coating of high radiation strength for laser applications in the IR spectrum for nonlinear ZnGeP2 crystals has been developed for the first time. The coating was constructed using YbF3/ZnS. The developed coating was obtained by a novel approach using ion-beam deposition of these materials on a ZnGeP2 substrate. It has a high LIDT of more than 2 J/cm2. Optimal layer deposition regimes were found for high film density and low absorption, and good adhesion of the coating to the substrate was achieved. At the same time, there was no dissociation of the double compound under high-energy ions.
