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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 19 — Jul. 1, 1998
  • pp: 4123–4129

Liquid Refractometry by the Rainbow Method

Hiroyuki Hattori, Hidenori Kakui, Hendrik Kurniawan, and Kiichiro Kagawa  »View Author Affiliations


Applied Optics, Vol. 37, Issue 19, pp. 4123-4129 (1998)
http://dx.doi.org/10.1364/AO.37.004123


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Abstract

A new method for measuring the refractive index of liquid, proposed in a previous paper [Appl. Opt. 36, 5552–5556 (1997)], has been developed. The minimum deviation of a laser beam deflected by a liquid-filled cylindrical cell was calculated by use of geometric optics. These theoretical results were compared with experimental results, with excellent agreement. As a result, the unknown refractive index of a liquid could be obtained by use of a computer calculation to give a best fit. The computer calculation showed that the sensitivity of the refractometer increases with the cell-wall thickness until total reflection takes place. A small refractive-index difference can be detected within a precision of 1 × 10−6 by use of a metal-oxide semiconductor linear image sensor. We show how to calibrate the refractometer with pure water at 3.98 °C.

© 1998 Optical Society of America

Citation
Hiroyuki Hattori, Hidenori Kakui, Hendrik Kurniawan, and Kiichiro Kagawa, "Liquid Refractometry by the Rainbow Method," Appl. Opt. 37, 4123-4129 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-19-4123


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References

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