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Applied Optics

Applied 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)

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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

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

Bruce M. Pixton and John E. Greivenkamp, "Automated measurement of the refractive index of fluids," Appl. Opt. 47, 1504-1509 (2008)

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  1. Y. Sarov, S. Sainov, and I. Kostic, , “Automatic VIS-near IR laser refractometer,” Rev. Sci. Instrum. 75, 3342-3344 (2004). [CrossRef]
  2. J. R. Castrejón-Pita, A. Morales, and R. Castrejón-García, “Critical angle laser refractometer,” Rev. Sci. Instrum. 77, 035101 (2006). [CrossRef]
  3. G. E. Fishter, “Refractometry,” in Applied Optics and Optical Engineering, Volume 4, Optical Instruments, Part 1, R. Kingslake, ed. (Academic, 1967), pp. 363-382.
  4. J. P. Borgogno, B. Lazarides, and E. Pelletier, “Automatic determination of the optical constants of inhomogeneous thin films,” Appl. Opt. 21, 4020-4029 (1982). [CrossRef] [PubMed]
  5. E. Pelletier, “Methods for determining optical parameters of thin films,” in Handbook of Optical Constants of Solids II, E. D. Palik, ed. (Academic, 1991), pp. 57-71.
  6. R. A. Synowicki, G. K. Pribil, G. Cooney, C. M. Herzingerand, S. E. Green, R. H. French, M. K. Yang, J. H. Burnett, and S. Kaplan, “Fluid refractive index measurements using rough surface and prism minimum deviation techniques,” J. Vac. Sci. Technol. B 22, 3450-3453 (2004). [CrossRef]
  7. J. V. Hughes, “A new precision refractometer,” J. of Sci, Instrum. 18, 234-237 (1941). [CrossRef]
  8. P. R. Cooper, “Refractive-index measurements of liquids used in conjunction with optical fibers,” Appl. Opt. 22, 3070-3072(1983). [CrossRef] [PubMed]
  9. E. Moreels, C. de Greef, and R. Finsy, “Laser light refractometer,” Appl. Opt. 23, 3010-3013 (1984). [CrossRef] [PubMed]
  10. S. G. Kaplan and J. H. Burnett, “Optical properties of fluids for 248 and 193 nm immersion photolithography,” Appl. Opt. 45, 1721-1724 (2006). [CrossRef] [PubMed]
  11. J. Z. Malacara, “Angle, distance, curvature, and focal length measurements,” in Optical Shop Testing, D. Malacara, ed. (Wiley, 1992), pp. 715-741.
  12. L. W. Tilton and J. K. Taylor, “Refractive index and dispersion of distilled water for visible radiation, at temperatures 0 to 60 C,” J. Res. Natl. Bur. Stand. 20, 419-477 (1938).

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