White Light Interferometry for the Optical Characterization of Transparent ICF Shells

White light interferometry has been adapted to the characterization of transparent ICF shells and their precursor mandrels. The combination of an interferometric microscope, a precision z-stage, and simulation-derived analysis algorithms allow determination of the diameters of the inner and outer surfaces, their non-concentricity, the location of interfacial layers, the average index of refraction of the walls, and the thickness of discrete layers within the shell wall. The hard- and soft-ware required for these measurements are described.