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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 16 — Aug. 15, 1984
  • pp: 2752–2759

Three-reflection halfwave and quarterwave retarders using dielectric-coated metallic mirrors

T. F. Thonn and R. M. A. Azzam  »View Author Affiliations


Applied Optics, Vol. 23, Issue 16, pp. 2752-2759 (1984)
http://dx.doi.org/10.1364/AO.23.002752


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Abstract

A design procedure is described to determine the thicknesses of single-layer coatings of a given dielectric on a given metallic substrate so that a specified net phase retardance (and/or a net relative amplitude attenuation) between the p and s polarizations is achieved after three reflections from a symmetrical arrangement of three mirrors that maintain collinearity of the input and output beams. Examples are presented of halfwave and quarterwave retarders (HWR and QWR) that use a ZnS–Ag film–substrate system at the CO2-laser wavelength λ = 10.6 μm. The equal net reflectances for the p and s polarizations are computed and found to be high (above 90%) for most designs. Sensitivity of the designs (deviation of the magnitude and phase of the ratio of net complex p and s reflection coefficients from design specifications) to small film-thickness and angle-of-incidence errors is examined, and useful operation over a small wavelength range (10–11 μm) is demonstrated.

© 1984 Optical Society of America

History
Original Manuscript: April 16, 1984
Published: August 15, 1984

Citation
T. F. Thonn and R. M. A. Azzam, "Three-reflection halfwave and quarterwave retarders using dielectric-coated metallic mirrors," Appl. Opt. 23, 2752-2759 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-16-2752

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