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Article | REF: AF3348 V1

Optical thin films and interferential filtering

Authors: Claude AMRA, Catherine GRÈZES-BESSET

Publication date: January 10, 2011 | Lire en français

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    3. Reflection, transmission, absorption

    We show here that simple analytical reasoning is possible as soon as the admittances are known. The stacks below are illuminated by a plane wave of amplitude A 0+ via the superstrate. We restrict ourselves to tangential fields, which allows us to use admittance properties.

    3.1 Reflection

    The reflection coefficient r 0 in amplitude of a stack illuminated on the superstrate side is defined for each polarization as :

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