Transparent binary-thickness coatings on metal substrates that produce binary patterns of orthogonal elliptical polarization states in reflected light

Rasheed M. A. Azzam; Wade W. Angel

doi:10.1117/12.138785

11 December 1992 Transparent binary-thickness coatings on metal substrates that produce binary patterns of orthogonal elliptical polarization states in reflected light

Rasheed M. A. Azzam, Wade W. Angel

Author Affiliations +

Proceedings Volume 1746, Polarization Analysis and Measurement; (1992) https://doi.org/10.1117/12.138785
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A reflective division-of-wavefront polarizing beam splitter is described that uses a dual- thickness transparent thin-film coating on a metal substrate. A previous design that used a partially clad substrate at the principal angle of the metal [Azzam, JOSA A 5, 1576 (1988)] is replaced by a more general one in which the substrate is coated throughout and the film thickness alternates between two non-zero levels. The incident linear polarization azimuth is chosen near, but not restricted to, 45 degree(s) (measured from the plane of incidence), and the angle of incidence may be selected over a range of values. The design procedure, which uses the two-dimensional Newton-Raphson method, is applied to the SiO₂-Au film- substrate system at 633 nm wavelength, as an example, and the characteristics of the various possible coatings are presented.

Citation Download Citation

Rasheed M. A. Azzam and Wade W. Angel "Transparent binary-thickness coatings on metal substrates that produce binary patterns of orthogonal elliptical polarization states in reflected light", Proc. SPIE 1746, Polarization Analysis and Measurement, (11 December 1992); https://doi.org/10.1117/12.138785

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