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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 10 — Apr. 1, 2008
  • pp: 1504–1509

Automated measurement of the refractive index of fluids

Bruce M. Pixton and John E. Greivenkamp  »View Author Affiliations


Applied Optics, Vol. 47, Issue 10, pp. 1504-1509 (2008)
http://dx.doi.org/10.1364/AO.47.001504


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Abstract

A method for automating refractive-index measurements of fluids has been developed. An encoded rotation stage and position-sensitive detector enable automated reading of angles typically acquired by visual means. Two tunable lasers are used to obtain index measurements at ten discrete wavelengths across the visible spectrum. This method has been implemented on a Hilger–Chance refractometer from which the bulk refractive-index values for various transparent fluids have been measured. An index measurement accuracy of better than one part in the fourth decimal place for distilled water and a few parts in the fourth decimal place for higher index fluids is obtained.

© 2008 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(120.5710) Instrumentation, measurement, and metrology : Refraction
(160.4760) Materials : Optical properties

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: December 19, 2007
Revised Manuscript: February 8, 2008
Manuscript Accepted: February 18, 2008
Published: March 27, 2008

Virtual Issues
Vol. 3, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Bruce M. Pixton and John E. Greivenkamp, "Automated measurement of the refractive index of fluids," Appl. Opt. 47, 1504-1509 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-10-1504

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