Abstract
The possibility of making multilayer reflecting coatings by using materials whose dielectric susceptibility ∊ is very near to unity at the frequency under consideration is discussed. For the pair of substances with a given Re∊ and Im∊ the explicit expressions are obtained for the value of reflection coefficient and for the optimum thickness of layers. The published data on Re∊ and Im∊ allowed us to choose the pairs of substances for which one may hope to create (in principle) the mirrors for normal incidence with R ~ 50% at λ ≳ 30 Å.
© 1977 Optical Society of America
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