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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 10 — Apr. 1, 2002
  • pp: 1899–1907

Rainbow refractometry: simultaneous measurement of temperature, refractive index, and size of droplets

James Hom and Norman Chigier  »View Author Affiliations


Applied Optics, Vol. 41, Issue 10, pp. 1899-1907 (2002)
http://dx.doi.org/10.1364/AO.41.001899


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Abstract

The capabilities and limitations of rainbow refractometry, specifically the minimum measurable droplet size and the errors in the refractive index (temperature), have been studied. We evaluate what we believe is a new method of indirectly applying the Lorenz-Mie theory to rainbow refractometry. The results show that this new method reduces the errors and eliminates the biases that may occur if the Airy theory is used. A more precise method to filter the high-frequency oscillations associated with the measurement signals was developed. Finally, it was discovered that the errors associated with rainbow refractometry are such that a single droplet measurement is unreliable. A mean refractive index should be determined on the basis of multiple droplet measurements.

© 2002 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.6780) Instrumentation, measurement, and metrology : Temperature

History
Original Manuscript: June 1, 2001
Revised Manuscript: October 29, 2001
Published: April 1, 2002

Citation
James Hom and Norman Chigier, "Rainbow refractometry: simultaneous measurement of temperature, refractive index, and size of droplets," Appl. Opt. 41, 1899-1907 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-10-1899

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