title: Abelès method revisited.
abstract: The Abelès method is a classical method for determining the refractive index of dielectric thin films. In this paper we examine the main features of the method in a formal manner, using closed-form equations, and we show that the method is ambiguous in certain yet unreported situations.
authors.affiliation: National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, Măgurele, Romania.
authors.forename: Petre C
authors.initials: PC
authors.lastname: Logofătu
authors.forename: Dan
authors.initials: D
authors.lastname: Apostol
authors.forename: Victor
authors.initials: V
authors.lastname: Damian
authors.forename: Iuliana M
authors.initials: IM
authors.lastname: Iordache
authors.forename: Mihaela M
authors.initials: MM
authors.lastname: Bojan
authors.forename: Raluca
authors.initials: R
authors.lastname: Müller