Leslie E. Smith and Robert R. Stromberg, "Measurement of Optical Constants: Optical Constants of Liquid Mercury at 5461 Å*," J. Opt. Soc. Am. 56, 1539-1542 (1966)
The optical constants of liquid mercury have been measured by ellipsometry at a wavelength of 5461 Å. The measured results are n = 1.485 and κ = 3.061. Discrepancies among values from the literature are discussed and the magnitude of the important sources of error are evaluated. The effects on the measured index of several different types of surface films between the mercury and several contact media have been calculated and compared. Errors in alignment are shown to cause large changes in the measured refractive index as well as an apparent dependence upon the angle of incidence.
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Interpolated from an experimental value at a wavelength within 500 Å
Authors estimate probable errors of n ± 0.05 and κ ± 0.10.
Value at or near 70° angle of incidence.
The contact medium is not explicitly stated and is assumed to be air.
Schulz estimates an error for n and κ of 4% and 2%, respectively.
Interpolated from an experimental value at 5500 Å.
Average of five determinations; the standard errors of the means are 0.0047 and 0.0044 for n and κ, respectively.
Table II
Apparent optical constants of mercury measured under thin films. The assumed complex index of the substrate is n = 1.485, κ = 3.061; ϕ = 70°.
At a 70° angle of incidence this case corresponds to frustrated total reflection. Calculations made at an angle (40°) below the critical angle gave identical results. The problem of measurements near or above the critical angle is treated in detail by E. Passaglia and R. R. Stromberg, J. Res. Natl. Bur. Std. 68A, 601 (1964).
Tables (2)
Table I
The complex index of refraction (N = n − inκ) of liquid mercury at 5461 Å.
Interpolated from an experimental value at a wavelength within 500 Å
Authors estimate probable errors of n ± 0.05 and κ ± 0.10.
Value at or near 70° angle of incidence.
The contact medium is not explicitly stated and is assumed to be air.
Schulz estimates an error for n and κ of 4% and 2%, respectively.
Interpolated from an experimental value at 5500 Å.
Average of five determinations; the standard errors of the means are 0.0047 and 0.0044 for n and κ, respectively.
Table II
Apparent optical constants of mercury measured under thin films. The assumed complex index of the substrate is n = 1.485, κ = 3.061; ϕ = 70°.
At a 70° angle of incidence this case corresponds to frustrated total reflection. Calculations made at an angle (40°) below the critical angle gave identical results. The problem of measurements near or above the critical angle is treated in detail by E. Passaglia and R. R. Stromberg, J. Res. Natl. Bur. Std. 68A, 601 (1964).
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