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Optical, chemical and coverage properties of magnesium fluoride formed by atomic layer deposition

  • Special Section: Regular Paper
  • The Fourteenth Japan-Finland Joint Symposium on Optics in Engineering (OIE’23), Hamamatsu, Japan
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Abstract

Magnesium fluoride (MgF2) thin films deposited using atomic layer deposition (ALD) were studied for use as optical coatings, meta-surface anti-reflection layer, and chemically resistive passivation. The deposition was performed in a commercially available Picosun® R-200 Advanced ALD reactor. Characterization of composition, density, optical property, chemical resistivity and coverage were performed. ALD-deposited films showed high R + T at wavelength down to 350 nm, excellent 3D coverage, and high chemical resistivity. This technology enables unique properties to improve 3D structured optics such as metasurface.

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Correspondence to Yuma Sugai.

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Sugai, Y., Sugata, H., Sugawara, T. et al. Optical, chemical and coverage properties of magnesium fluoride formed by atomic layer deposition. Opt Rev (2024). https://doi.org/10.1007/s10043-024-00867-7

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  • DOI: https://doi.org/10.1007/s10043-024-00867-7

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