In this paper we present an analysis of pressure-volume data for certain optical fluids, which characterizes them by two parameters: their bulk moduli and the pressure derivative of their bulk moduli, both evaluated at zero pressure. We then relate their refractive-index changes to density and pressure using this analysis and the Lorentz-Lorenz equation with a density-dependent polarizability. An example of the use of such fluids in a fiber-optic pressure gauge being developed at Sandia is also discussed.
© 1985 Optical Society of America
Jonathan D. Weiss, "Piezooptic behavior of certain fluids," Appl. Opt. 24, 1151-1155 (1985)