A METHOD AND SYSTEM FOR OBTAINING N AND K MAP FOR MEASURING FLY-HEIGHT

摘要

A method for obtaining a refractive index (n) and extinction coefficient (k) map of a slider surface, the method comprising the steps of processing an image of the slider surface to obtain spatially resolved normalized intensity data of the slider surface; measuring n and k values of the slider surface at different areas of the slider surface to obtain reflectivity data of the slider surface; mapping a distribution of the normalized intensity data to a distribution of the reflectivity data for deriving the n and k map of the slider surface.