Design and Evaluation of Homogeneously Mixed Dielectric Antireflection Coatings with ZEMAX

Mixed dielectric films of ZnS and MgF 2 have been modeled in IR (3μm) band to reduce a reflectance from ZnS substrate which is around 14%. Reflectance value are enhanced starting from a mixed quarter single layer, double and triple layer as innermost and intermediate layers (quarter-quarter-quarter)...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-07, Vol.1963 (1), p.12045
Main Authors: Rashid, Hayfa G, Mishjil, Khudheir A, Hassim, Hussian T., Algaffar, Alaa N. Abd, Habubi, Nadir F
Format: Article
Language:English
Subjects:
Antireflection coatings
ARC’s coatings
Drude dispersion theory
Lorentz-Lorenz theory
Magnesium fluorides
Mixed dielectric films
Monolayers
Multilayers
Reflectance
Refractivity
Substrates
Zemax software
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Summary:Mixed dielectric films of ZnS and MgF 2 have been modeled in IR (3μm) band to reduce a reflectance from ZnS substrate which is around 14%. Reflectance value are enhanced starting from a mixed quarter single layer, double and triple layer as innermost and intermediate layers (quarter-quarter-quarter) and (quarter-half –quarter) ARC’s. The designed layers are optimized with Zemax-EE operand to reach the target by varying their thickness and refractive indices simultaneously . The analysis has shown that the proposed mixing multilayer construction are very effective in enhancing the transmittance for ZnS.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1963/1/012045