Post-production characterization of double-sided ZnS/YbF3 mid-infrared thin-film optical elements

Tatiana Amochkina; Daniel Hahner; Michael K. Trubetskov; Vladimir Pervak; Ferenc Krausz

doi:10.1117/12.3017228

18 June 2024 Post-production characterization of double-sided ZnS/YbF3 mid-infrared thin-film optical elements

Tatiana Amochkina, Daniel Hahner, Michael K. Trubetskov, Vladimir Pervak, Ferenc Krausz

Proceedings Volume PC13020, Advances in Optical Thin Films VIII; PC130200V (2024) https://doi.org/10.1117/12.3017228
Event: SPIE Optical Systems Design, 2024, Strasbourg, France

Abstract

Development of modern mid-infrared laser applications requires high-quality optical elements operating in the broadband spectral ranges from visible to 15 um. ZnS/YbF3 coatings on ZnSe substrates are perspective candidates for such elements since these thin-film materials and the substrate are transparent in this region and provide sufficient refractive index contrast. Experiments demonstrate that spectra of ZnS/YbF3 multilayers on ZnSe and glass substrates are shifted with respect to each other significantly. This issue plays a key role in the monitoring concept of YbF3/ZnS-coatings since typically the monitoring is conducted on a glass, and the final optical elements are on the ZnSe substrates. The study reports sophisticated experiments on the deposition of ZnS layers, its in-depth analysis on different substrates, and innovative reverse engineering of double-sided ZnS/YbF3 optical elements in the spectral ranges from 400 nm to 12 um. The results can be interesting for optical coating and laser engineers.

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Citation Download Citation

Tatiana Amochkina, Daniel Hahner, Michael K. Trubetskov, Vladimir Pervak, and Ferenc Krausz "Post-production characterization of double-sided ZnS/YbF3 mid-infrared thin-film optical elements", Proc. SPIE PC13020, Advances in Optical Thin Films VIII, PC130200V (18 June 2024); https://doi.org/10.1117/12.3017228

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KEYWORDS

Optical components

Mid-IR

Multilayers

Thin films

Zinc selenide

Glasses

Near infrared

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