Abstract

A critical angle method was used to measure the index of refraction of a solid medium when an air gap between the prism and the medium is present. The gap effect was analyzed both numerically and experimentally. Since the total internal reflection is severely disturbed by the large gap, determination of the critical angle and the resulting refractive index becomes ambiguous and inaccurate. By using an index matching fluid, we could determine the index of refraction with an uncertainty of <TEX>${\pm}2{\times}1^{-3}$</TEX> even when the gap is as large as 1 <TEX>${\mu}m$</TEX>.

© 2008 Optical Society of Korea

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References

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2007

1999

J. D. Jackson, Classical Electrodynamics, <TEX>$3^{rd}$</TEX> ed. (John Wiley and Sons, New York 1999), Ch. 7

1997

J. F. H. Nicholls, B. Henderson, and B. H. T. Chai, "Accurate determination of the indices of refraction of nonlinear optical crystals," Appl. Opt. vol. 36, no. 33, pp. 8587-8594, 1997
[CrossRef]

1996

1995

Q. W. Song, C. Y. Ku, C. Zhang, R. B. Gross, R. R. Birge, and R. Michalak, "Modified critical angle method for measuring the refractive index of bio-optical materials and its application to bacteriorhodopsin," J. Opt. Soc. Am. B., vol. 12, no. 5, pp. 797-803, 1995

1992

U. Schlarb and K. Betzler, "Interferometric measurement of refractive indices of <TEX>$LiNbO_3$</TEX>," Ferroelectrics, vol. 126, no. 1, pp. 39-44, 1992

R. W. Boyd, Nonlinear optics (Academic Press, San Diego 1992), Ch. 2

1989

G. P. Agrawal, Nonlinear fiber optics (Academic Press, San Diego 1989), Ch. 3

1983

1979

A. C. Adams, D. P. Schinke, and C. D. Capio, "An evaluation of the prism coupler for measuring the thickness and refractive index of dielectric films on silicon substrates,"J. Electrochem. Soc., vol. 126, pp. 1539-1543, 1979
[CrossRef]

1975

1973

1969

1966

1965

I. H. Malitson, "Interspecimen comparison of the refractive index of fused silica," J. Opt. Soc. Am., vol. 55, pp. 1205-1209, 1965

W. L. Bond, "Measurement of the refractive indices of several crystals," J. Appl. Phys., vol. 36, pp. 1674-1677, 1965
[CrossRef]

Appl. Opt.

Applied Optics

J. F. H. Nicholls, B. Henderson, and B. H. T. Chai, "Accurate determination of the indices of refraction of nonlinear optical crystals," Appl. Opt. vol. 36, no. 33, pp. 8587-8594, 1997
[CrossRef]

Ferroelectrics

U. Schlarb and K. Betzler, "Interferometric measurement of refractive indices of <TEX>$LiNbO_3$</TEX>," Ferroelectrics, vol. 126, no. 1, pp. 39-44, 1992

J. Appl. Phys.

W. L. Bond, "Measurement of the refractive indices of several crystals," J. Appl. Phys., vol. 36, pp. 1674-1677, 1965
[CrossRef]

J. Electrochem. Soc.

A. C. Adams, D. P. Schinke, and C. D. Capio, "An evaluation of the prism coupler for measuring the thickness and refractive index of dielectric films on silicon substrates,"J. Electrochem. Soc., vol. 126, pp. 1539-1543, 1979
[CrossRef]

J. Opt. Soc. Am.

J. Opt. Soc. Am. B.

Q. W. Song, C. Y. Ku, C. Zhang, R. B. Gross, R. R. Birge, and R. Michalak, "Modified critical angle method for measuring the refractive index of bio-optical materials and its application to bacteriorhodopsin," J. Opt. Soc. Am. B., vol. 12, no. 5, pp. 797-803, 1995

J. Opt. Soc. Korea

Metrologia

B. Edlen,"The refractive index of air,"Metrologia, vol. 2, pp. 71-80, 1966
[CrossRef]

Other

www.nist.gov

www.atago.net

G. P. Agrawal, Nonlinear fiber optics (Academic Press, San Diego 1989), Ch. 3

R. W. Boyd, Nonlinear optics (Academic Press, San Diego 1992), Ch. 2

J. D. Jackson, Classical Electrodynamics, <TEX>$3^{rd}$</TEX> ed. (John Wiley and Sons, New York 1999), Ch. 7

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