Knowledge Bank

An asymmetric Michelson interferometer has been constructed in order to measure the refractive index of ozone. Optical dispersion measurements have been carried out between 3800 {\AA} and 2.5 microns with an absolute accuracy of one part in $106$. The results have been interpreted with a two term Sellmeier equation as well as the more recent procedure proposed by Langhoff and $Karplus.1$ The extrapolation of the data to long wavelengths has been used to examine dielectric constant values reported in the literature.