Abstract

Methods previously developed for studying the optical properties of solid metals were modified to permit their use for studying liquid Hg and liquid Ga. Reflectivities were measured at an angle of incidence of 45° at glass-metal, quartz-metal, and NaCl-metal interfaces in the wavelength range of 0.23 μ to 13 μ. In a second type of experiment the phase change accompanying reflection at normal incidence at a mica-metal interface was measured in the range 0.4 μ to 0.87 μ. In this shorter wavelength range the two measured quantities, reflectivity and phase change, were used to compute the optical constants n and k. The values thus obtained agreed to within the experimental accuracy with those calculated with the Drude free electron theory. The fact that the experimentally determined reflectivity for the complete range of 0.23 μ to 13 μ agreed closely with that predicted by the Drude theory strongly suggests that the theory applies throughout this entire wavelength range.

© 1957 Optical Society of America

Comparison of Calculated and Experimental Values for the Optical Reflectivity of the Liquid Alloys Hg-In, Hg-Tl, Ga-In at 25°C

L. G. Schulz
J. Opt. Soc. Am. 47(1) 70-72 (1957)

The Optical Constants of Silver, Gold, Copper, and Aluminum. I. The Absorption Coefficient k

L. G. Schulz
J. Opt. Soc. Am. 44(5) 357-362 (1954)

Optical Properties and Oxidation of Evaporated Titanium Films*

Georg Hass and Alan P. Bradford
J. Opt. Soc. Am. 47(2) 125-129 (1957)

An Experimental Confirmation of the Drude Free Electron Theory of the Optical Properties of Metals for Silver, Gold, and Copper in the Near Infrared

L. G. Schulz
J. Opt. Soc. Am. 44(7) 540-545 (1954)

Optical Properties of Thin Absorbing Films*

F. Abelès
J. Opt. Soc. Am. 47(6) 473-482 (1957)