Regularities of oblique light reflection by a film, caused by a multibeam interference

Pseudo-Brewster Angular Conditions for thin Absorbing Layer on the Transparent Substrate

“…Pseudo-Brewster angular conditions for a single-layer transparent structure were considered earlier [1,2]. It was shown that minima of the reflectance for p-or s-polarization reach zero at certain angles of incidence for a single-layer structure.…”

“…Equality of an angle of incidence to a pseudo-Brewster angle for these structures is a necessary but insufficient requirement for achievement of zero reflectance at the certain polarization of light. For zero reflectance, it is also necessary that the phase thickness of the plane-parallel layer at this angle of incidence has been definitely chosen [2]. Thus, the pseudo-Brewster angular conditions at which zero of the reflectance is attained for a given polarization are reduced to the fulfillment of two necessary conditions: 1) the angle of incidence is equal to the pseudo-Brewster angle; 2) the phase thickness of the layer is reaching a certain magnitude, which depends on this angle.…”

Application of spectral envelope functions of multilayer structures for analytical determination of antireflection conditions

“…Envelopes of reflection and transmission spectra of one-layer systems have been used by many researches in order to derive optical constants of those systems [1][2][3][4][5][6][7]. In particular, the authors [8,9] have employed the envelope function for spectral reflection minima for finding of expressions for the incidence angles that provide zero p-or s-reflectance of one-layer structures. In spite of a common opinion that finding out the analytical functions for the spectral envelopes is hardly possible, even for relatively simple case of two transparent films [10], analytical expressions for the envelopes of both transparent and absorbing two-and three-layer structures have nevertheless been obtained [11].…”