Observation of Bloch Surface Waves in the Mid-Infrared Spectral Range

Smolik, G.; Descharmes, Nicolas; Herzig, Hans Peter

doi:10.1109/omn.2018.8454644

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2023

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“…At the same time, in [24], an AR coating based on a ZnSe/YbF 3 pair shows LIDT at a level of 12.2 J/cm 2 . Additionally, ZnSe/YbF 3 structures on CaF 2 substrates by the e-beam evaporation method obtained Bloch surface waves [25] and deformable mirrors [26]. The production of ZnSe/Al 2 O 3 nanostructures and the study of their optical properties were conducted in [27] by RF magnetron sputtering on single-crystal silicon.…”

Section: Introductionmentioning

confidence: 99%

High-Strength Optical Coatings for Single-Crystal ZnGeP2 by the IBS Method Using Selenide and Oxide Materials

et al. 2023

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The paper presents the results on the development of an optical coating for a single-crystal ZnGeP2 substrate based on a selenide-oxide pair of materials (ZnSe/Al2O3). The obtained coating ensures the operation of OPO in the mid-IR range up to 5 μm wavelengths. The possibility of ZnSe sputtering by the IBS method is shown. The obtained optical coating has a high laser-induced damage threshold (LIDT) value at a 2097 µm wavelength: J/cm2 in energy density and = 101 W/cm2 in power density at a 10 KHz pulse repetition frequency and a pulse duration of 35 ns. Thus, it is shown for the first time that the pair of materials ZnSe/Al2O3 can be used for the deposition of optical coatings by the IBS method with high LIDT values for ZnGeP2 optical elements operating in the mid-IR range.

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Section: Introductionmentioning

confidence: 99%