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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 21, Iss. 7 — Jul. 1, 2004
  • pp: 1316–1321

Degree of polarization as an objective method of estimating scattering

Juan M. Bueno, Esther Berrio, Maris Ozolinsh, and Pablo Artal  »View Author Affiliations

JOSA A, Vol. 21, Issue 7, pp. 1316-1321 (2004)

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A new method of determining objectively the amount of scattered light in an optical system has been developed. It is based on measuring the degree of polarization of the light in images formed after a double pass through the system. A dual apparatus composed of a modified double-pass imaging polarimeter and a wave-front sensor was used to measure polarization properties and aberrations of the system under test. We studied the accuracy of the procedure in a system that included a lanthanum-modified lead zirconate titanate (PLZT) ceramic plate able to generate variable amounts of scattered light as a function of the applied voltage. Changes in the voltage applied to the ceramics plate modified significantly the scattering contribution while hardly altering the wave-front aberration. The degree of polarization was well correlated with the level of scattering in the system as determined by direct-intensity measurements at the tails of the double-pass images. This indicates that this polarimetric parameter provides accurate relative estimates of the amount of scattering generated in a system. The technique can be used in a number of applications, for example, to determine objectively the amount of scattered light in the human eye.

© 2004 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(220.4840) Optical design and fabrication : Testing
(290.0290) Scattering : Scattering

Original Manuscript: September 16, 2003
Revised Manuscript: January 8, 2004
Manuscript Accepted: January 8, 2004
Published: July 1, 2004

Juan M. Bueno, Esther Berrio, Maris Ozolinsh, and Pablo Artal, "Degree of polarization as an objective method of estimating scattering," J. Opt. Soc. Am. A 21, 1316-1321 (2004)

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