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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 5, Iss. 6 — Jun. 1, 1988
  • pp: 773–781

Systematic and random errors in rotating-analyzer ellipsometry

J. M. M. de Nijs and A. van Silfhout  »View Author Affiliations


JOSA A, Vol. 5, Issue 6, pp. 773-781 (1988)
http://dx.doi.org/10.1364/JOSAA.5.000773


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Abstract

Errors and error sources occurring in rotating-analyzer ellipsometry are discussed. From general considerations it is shown that a rotating-analyzer ellipsometer is inaccurate if applied at P = 0° and in cases when ψ = 0° or where Δ is near 0° or 180°. Window errors, component imperfections, azimuth errors and all other errors may, to first order, be treated independently and can subsequently be added. Explicit first-order expressions for the errors δΔ and δψ caused by windows, component imperfections, and azimuth errors are derived, showing that all of them, except the window errors, are eliminated in a two-zone measurement. Higher-order errors that are due to azimuth errors are studied numerically, revealing that they are in general less than 0.1°. Statistical errors are also discussed. Errors caused by noise and by correlated perturbations, i.e., periodic fluctuations of the light source, are also considered. Such periodic perturbations do cause random errors, especially when they have frequencies near 2ωA and 4ωA.

© 1988 Optical Society of America

History
Original Manuscript: August 14, 1987
Manuscript Accepted: January 26, 1988
Published: June 1, 1988

Citation
J. M. M. de Nijs and A. van Silfhout, "Systematic and random errors in rotating-analyzer ellipsometry," J. Opt. Soc. Am. A 5, 773-781 (1988)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-5-6-773

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