Abstract

The reflectance and optical constants of evaporated copper and silver were measured in vacuum on freshly deposited films in the wavelength region from 1000 to 2000 Å. The optical constants were determined from reflectance measurements made at various angles of incidence. Aging studies showed that the reflectance of evaporated copper in the vacuum ultraviolet decreased after its deposition in vacuum and during exposure to air much more rapidly than that of evaporated silver.

© 1965 Optical Society of America

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References

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  1. R. P. Madden in Physics of Thin Films, edited by G. Hass (Academic Press Inc., New York, 1963), Vol. I, pp. 123–186.
  2. R. P. Madden, L. R. Canfield, and G. Hass, J. Opt. Soc. Am. 53, 620 (1963).
    [Crossref]
  3. J. P. Waldron and D. W. Juenker, J. Opt. Soc. Am. 54, 204 (1964).
    [Crossref]
  4. R. P. Madden and L. R. Canfield, J. Opt. Soc. Am. 51, 838 (1961).
    [Crossref]
  5. R. Tousey, J. Opt. Soc. Am. 29, 235 (1939).
    [Crossref]
  6. I. Simon, J. Opt. Soc. Am. 41, 336 (1951).
    [Crossref]
  7. H. Ehrenreich and H. R. Philipp, Phys. Rev. 128, 1622 (1962).
    [Crossref]

1964 (1)

1963 (1)

1962 (1)

H. Ehrenreich and H. R. Philipp, Phys. Rev. 128, 1622 (1962).
[Crossref]

1961 (1)

1951 (1)

1939 (1)

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Figures (7)

Fig. 1
Fig. 1

Calculated thickness of evaporated copper required to decrease the transmittance to 0.1 % as a function of wavelength from 1000 to 2000 Å.

Fig. 2
Fig. 2

Reflectance of evaporated copper before and after 1 day, 5 weeks, and 6 months exposure to air. (Wavelength region 1000 to 2000 Å.)

Fig. 3
Fig. 3

Effect of aging in vacuum and in air on the reflectance of evaporated copper at λ=1216 Å.

Fig. 4
Fig. 4

Determination of n and k of copper from reflectance data at various angles of incidence at λ=1398 Å. Each curve represents the n and k values allowed by the reflectance measured at the indicated angle of incidence.

Fig. 5
Fig. 5

Optical constants and normal incidence reflectance of evaporated copper as a function of wavelength from 1000 to 2000 Å.

Fig. 6
Fig. 6

Reflectance of evaporated silver before and after 5 weeks exposure to air. (Wavelength region 1000 to 2000 Å.)

Fig. 7
Fig. 7

Optical constants and normal incidence reflectance of evaporated silver as a function of wavelength from 1000 to 2000 Å.