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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. 10, Iss. 9 — Sep. 1, 1993
  • pp: 2076–2083

Accurate null polarimetry for measuring the refractive index of transparent materials

S. F. Nee and H. E. Bennett  »View Author Affiliations


JOSA A, Vol. 10, Issue 9, pp. 2076-2083 (1993)
http://dx.doi.org/10.1364/JOSAA.10.002076


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Abstract

Simple null polarimetry is introduced to measure the refractive index n of transparent and semitransparent materials. For a linearly polarized incident light, the reflected polarization can be used to determine n with the Fresnel equations. This method is fast, convenient, and versatile enough to provide accurate results on small laboratory samples. Possible errors in experiments are analyzed, and ways to eliminate these errors are given. With our instrument, the uncertainty in the deduced n is ±0.0004. The accuracy is still within 0.1% for materials with high n and with the extinction coefficient of the order of 0.001. The method is also sufficiently accurate for characterizing the homogeneity of transparent materials.

© 1993 Optical Society of America

History
Original Manuscript: December 14, 1992
Manuscript Accepted: March 15, 1993
Published: September 1, 1993

Citation
S. F. Nee and H. E. Bennett, "Accurate null polarimetry for measuring the refractive index of transparent materials," J. Opt. Soc. Am. A 10, 2076-2083 (1993)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-10-9-2076

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