Abstract

The refractive indexes and their variations with temperature for silicon and germanium have been measured over the 95–298-K and 2.5–12-μm ranges. Data are given for the refractive index that are in reasonable agreement with those of previous investigators. For dn/dT the values are independent of wavelength and are approximately 1.5 × 10−4 (K)−1 and 4.0 × 10−4 (K)−1 for silicon and germanium, respectively.

© 1976 Optical Society of America

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References

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  1. V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).
  2. H. B. Briggs, Phy. Rev. 77, 287 (1950).
  3. C. D. Salzberg, J. J. Villa, J. Opt. Soc. Am. 47, 244 (1957).
  4. M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).
  5. D. H. Rank, H. E. Bennett, D. C. Cronemeyer, J. Opt. Soc. Am. 44, 13, (1954).
  6. J. J. Villa, Appl. Opt. 11, 2102 (1972).
  7. W. Primak, Appl. Opt. 10, 759 (1971).

1975

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

1972

1971

1959

M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).

1957

1954

1950

H. B. Briggs, Phy. Rev. 77, 287 (1950).

Bennett, H. E.

Briggs, H. B.

H. B. Briggs, Phy. Rev. 77, 287 (1950).

Brooks, H.

M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).

Cardona, M.

M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).

Cronemeyer, D. C.

Harvey, J. E.

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

Icenogle, H. W.

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

Korniski, R.

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

Paul, W.

M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).

Platt, V. C.

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

Primak, W.

Rank, D. H.

Salzberg, C. D.

Villa, J. J.

Wolfe, W. L.

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

Appl. Opt.

J. Opt. Soc. Am.

D. H. Rank, H. E. Bennett, D. C. Cronemeyer, J. Opt. Soc. Am. 44, 13, (1954).

V. C. Platt, H. W. Icenogle, J. E. Harvey, R. Korniski, W. L. Wolfe, J. Opt. Soc. Am. 65, (1975).

C. D. Salzberg, J. J. Villa, J. Opt. Soc. Am. 47, 244 (1957).

J. Phys. Chem. Solids

M. Cardona, W. Paul, H. Brooks, J. Phys. Chem. Solids 8, 204 (1959).

Phy. Rev.

H. B. Briggs, Phy. Rev. 77, 287 (1950).

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Figures (7)

Fig. 1
Fig. 1

Refractive index of germanium at four temperatures.

Fig. 2
Fig. 2

Germanium refractive index comparison. Data of various authors are indicated as follows: Briggs +; Rank ×; Salzburg ○; authors ●.

Fig. 3
Fig. 3

Δn/ΔT vs temperature for germanium. The error bars are estimates of the accuracy based on the estimated accuracy in measuring n.

Fig. 4
Fig. 4

Refractive index of silicon at four temperatures.

Fig. 5
Fig. 5

ΔnT vs temperature for silicon. The error bars are estimates of the accuracy based on the estimated accuracy in measuring n.

Fig. 6
Fig. 6

Silicon refractive index measurements by five research groups.

Fig. 7
Fig. 7

Silicon refractive index comparison. Data of various authors are indicated as follows: Villa ●; Salzburg △; Briggs ×; Cardona +; authors ○.

Tables (5)

Tables Icon

Table I Refractive Index of Germanium at Various Wavelengths for Given Temperatures

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Table II Refractive Index of Germanium at Various Temperatures for Given Wavelengths

Tables Icon

Table III Temperature Coefficient of the Refractive Index of Germanium

Tables Icon

Table IV Refractive Index of Silicon at Various Wavelengths for Given Temperatures

Tables Icon

Table V Refractive Index of Silicon at Various Temperatures for Given Wavelengths

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