Abstract

Index of refraction has been measured on fused silica, Corning code 7940, ultraviolet grade; Vycor, Corning Code 7913, optical grade, and aluminosilicate glass, Corning Code 1723. Values of n are given in the range 0.2–3.4 μ and at temperatures from 26° to 826°C. The minimum-deviation technique was used, employing a modified Perkin–Elmer 112UG spectrometer as a collimator. Results for fused silica agree well with those of previous investigations.

© 1969 Optical Society of America

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References

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  1. E. D. McAlister, J. J. Villa, and C. D. Salzberg, J. Opt. Soc. Am. 46, 485 (1956).
    [Crossref]
  2. I. H. Malitson, J. Opt. Soc. Am. 55, 1205 (1965).
    [Crossref]
  3. L. Prod’homme, Verres Refractaires 10, 267 (1956).

1965 (1)

1956 (2)

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Figures (1)

Fig. 1
Fig. 1

Modified Perkin–Elmer 112UG monochromator and rotary table. Key: C, chopper; F, filter; H, heater core; L, quartz lens; M, P. E. model 112UG monochromator; M1 & M3, plane mirrors; M2, parabola mirror; PH, prism holder; PSt prism sample; PT, phototube; SL1, entrance slit; SL2, exit slit; S, source; T, Imperial ultra-precision rotary table; TC, thermocouple; VT, vacuum tank; W, fused silica window; WD, wavelength drive.

Tables (3)

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Table I Refractive index vs temperature, fused silica Corning code 7940, ultraviolet grade.

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Table II Refractive index vs temperature, aluminosilicate glass Corning code 1723.

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Table III Refractive index vs temperature, Vycor Corning code 7913, optical grade.

Equations (2)

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σ ϕ = ( σ r 2 + σ a c 2 ) 1 2 = 4.35     sec , σ θ = ( σ c 2 + σ u c 2 ) 1 2 = 3.47     sec .
σ n = n ( cot ϕ σ ϕ + cot θ σ θ ) = 9.6 × 10 - 5 ,