Understanding metal-dielectric-metal absorption interference filters using lumped circuit theory and transmission line theory

Rickey G. Pastor

doi:10.1117/12.47747

1 March 1991 Understanding metal-dielectric-metal absorption interference filters using lumped circuit theory and transmission line theory

Rickey G. Pastor

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Proceedings Volume 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90; (1991) https://doi.org/10.1117/12.47747
Event: Applications of Optical Engineering: Proceedings of OE/Midwest '90, 1990, Rosemont, IL, United States

Abstract

Metal-Dielectric-Metal thin film assemblies have been used for more than forty years as absorption filters or reflection filters. Because this filter simultaneously absorbs nearly 100 of the incident radiation at certain wavelengths while reflecting nearly 100 at other wavelengths the filter is called either an absorption interference filter or a reflection interface filter. While the fundamental theory for understanding this filter is well established a combination of lumped circuit theory and distributed circuit theory offers a simpler approach to understanding how the filter works as well as offering a conceptual aid to designing the filter. These theories are combined in this paper to demonstrate this approach. 1.

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Rickey G. Pastor "Understanding metal-dielectric-metal absorption interference filters using lumped circuit theory and transmission line theory", Proc. SPIE 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90, (1 March 1991); https://doi.org/10.1117/12.47747

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KEYWORDS

Metals

Dielectrics

Reflectivity

Resistance

Optical filters

Absorption

Dielectric filters

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