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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 34 — Dec. 1, 1997
  • pp: 8999–9004

Study of the refractive index of microscopic glass beads by light-refraction analysis

F. Sarcinelli, R. Pizzoferrato, and F. Scudieri  »View Author Affiliations


Applied Optics, Vol. 36, Issue 34, pp. 8999-9004 (1997)
http://dx.doi.org/10.1364/AO.36.008999


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Abstract

The refractive index of submillimeter glass beads has been measured by means of a novel, to our knowledge, procedure with reference liquids that does not require close index matching and therefore avoids the use of toxic compounds for high-index glasses (i.e., n ≥ 1.8). The method is based on the analysis of the light refracted by a monolayer of beads in comparison with ray-tracing simulations. For the three different types of glass beads investigated a satisfactory fit is achieved by the assumption of a radial variation of the refractive index inside the beads. This is ascribed to the tensile and compressive stresses originating inside the beads during rapid solidification of the glass.

© 1997 Optical Society of America

History
Original Manuscript: April 21, 1997
Revised Manuscript: July 11, 1997
Published: December 1, 1997

Citation
F. Sarcinelli, R. Pizzoferrato, and F. Scudieri, "Study of the refractive index of microscopic glass beads by light-refraction analysis," Appl. Opt. 36, 8999-9004 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-34-8999

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