Abstract

The real n (ν) and imaginary k (ν) parts of the complex refractive index Nˆ = n + i k of water at 27 °C have been determined from measurements of spectral reflectance at near-normal incidence and from measurements of the transmittance of water in carefully constructed absorption cells. Values of n (ν) are reported in graphical and tabular form for the spectral region 3800–27 800 cm−1; values of the Lambert absorption coefficient α(ν) are presented graphically and in tabular form, along with k (ν) for the region 3800–14 500 cm−1. Upper limits of k (ν) are established for the region 14 500–27 800 cm−1. The results are compared with earlier studies.

© 1974 Optical Society of America

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References

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  1. W. M. Irvine and J. B. Pollack, Icarus 8, 324 (1968).
    [Crossref]
  2. L. Pontier and C. Dechambenoy, Ann. Geophys. 21, 462 (1965); Ann. Geophys. 22, 633 (1966).
  3. V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].
  4. M. R. Querry, B. Curnutte, and D. Williams, J. Opt. Soc. Am. 59, 1299 (1969).
    [Crossref]
  5. A. N. Rusk, D. Williams, and M. R. Querry, J. Opt. Soc. Am. 61, 895 (1971).
    [Crossref]
  6. G. M. Hale, M. R. Querry, A. N. Rusk, and D. Williams, J. Opt. Soc. Am. 62, 1103 (1972).
    [Crossref]
  7. C. W. Robertson and D. Williams, J. Opt. Soc. Am. 61, 1316 (1971).
    [Crossref]
  8. C. W. Robertson, B. Curnutte, and D. Williams, Mol. Phys. 26, 183 (1973).
    [Crossref]
  9. G. M. Hale and M. R. Querry, Appl. Opt. 12, 555 (1973).
    [Crossref] [PubMed]
  10. K. Kondratyev, Radiation in the Atmosphere (Academic, New York, 1969), pp. 107–123.
  11. J. A. Curcio and C. C. Petty, J. Opt. Soc. Am. 41, 302 (1951).
    [Crossref]

1973 (2)

C. W. Robertson, B. Curnutte, and D. Williams, Mol. Phys. 26, 183 (1973).
[Crossref]

G. M. Hale and M. R. Querry, Appl. Opt. 12, 555 (1973).
[Crossref] [PubMed]

1972 (1)

1971 (2)

1969 (2)

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

M. R. Querry, B. Curnutte, and D. Williams, J. Opt. Soc. Am. 59, 1299 (1969).
[Crossref]

1968 (1)

W. M. Irvine and J. B. Pollack, Icarus 8, 324 (1968).
[Crossref]

1965 (1)

L. Pontier and C. Dechambenoy, Ann. Geophys. 21, 462 (1965); Ann. Geophys. 22, 633 (1966).

1951 (1)

Aperovich, L. I.

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

Curcio, J. A.

Curnutte, B.

C. W. Robertson, B. Curnutte, and D. Williams, Mol. Phys. 26, 183 (1973).
[Crossref]

M. R. Querry, B. Curnutte, and D. Williams, J. Opt. Soc. Am. 59, 1299 (1969).
[Crossref]

Dechambenoy, C.

L. Pontier and C. Dechambenoy, Ann. Geophys. 21, 462 (1965); Ann. Geophys. 22, 633 (1966).

Hale, G. M.

Irvine, W. M.

W. M. Irvine and J. B. Pollack, Icarus 8, 324 (1968).
[Crossref]

Kondratyev, K.

K. Kondratyev, Radiation in the Atmosphere (Academic, New York, 1969), pp. 107–123.

Mikhailov, B. A.

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

Petty, C. C.

Pollack, J. B.

W. M. Irvine and J. B. Pollack, Icarus 8, 324 (1968).
[Crossref]

Pontier, L.

L. Pontier and C. Dechambenoy, Ann. Geophys. 21, 462 (1965); Ann. Geophys. 22, 633 (1966).

Popov, S. I.

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

Querry, M. R.

Robertson, C. W.

C. W. Robertson, B. Curnutte, and D. Williams, Mol. Phys. 26, 183 (1973).
[Crossref]

C. W. Robertson and D. Williams, J. Opt. Soc. Am. 61, 1316 (1971).
[Crossref]

Rusk, A. N.

Williams, D.

Zolatarev, V. M.

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

Ann. Geophys. (1)

L. Pontier and C. Dechambenoy, Ann. Geophys. 21, 462 (1965); Ann. Geophys. 22, 633 (1966).

Appl. Opt. (1)

Icarus (1)

W. M. Irvine and J. B. Pollack, Icarus 8, 324 (1968).
[Crossref]

J. Opt. Soc. Am. (5)

Mol. Phys. (1)

C. W. Robertson, B. Curnutte, and D. Williams, Mol. Phys. 26, 183 (1973).
[Crossref]

Opt. Spectrosk. (1)

V. M. Zolatarev, B. A. Mikhailov, L. I. Aperovich, and S. I. Popov, Opt. Spectrosk. 27, 790 (1969) [Opt. Spectrosc. 27, 430 (1969)].

Other (1)

K. Kondratyev, Radiation in the Atmosphere (Academic, New York, 1969), pp. 107–123.

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Figures (3)

Fig. 1
Fig. 1

Curve R gives fractional reflectance at near-normal incidence as a function of frequency in cm−1. Curve n gives a plot of refractive index n(ν) as a function of frequency.

Fig. 2
Fig. 2

Lambert absorption coefficient α(ν) as a function of frequency expressed in cm−1.

Fig. 3
Fig. 3

The continuous curve in the upper panel gives values of n(ν) obtained in the present study; the continuous curve in the lower panel gives values of α(ν) obtained in the present study. The crosses indicate values tabulated by Irvine and Pollack; the circles indicate values tabulated by Hale and Querry.

Tables (1)

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Table I Optical constants of liquid water from the near infrared to the ultraviolet.

Equations (3)

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T ( ν ) = [ 1 - R ( ν ) ] [ 1 - A ( ν ) ] exp [ - α ( ν ) x ] ,
R = [ ( n - 1 ) 2 + k 2 ] / [ ( n + 1 ) 2 + k 2 ] .
n = ( 1 + R 1 2 ) / ( 1 - R 1 2 ) .