Optical properties of self-affine thin films

Abstract
Optical properties of self-affine thin films are studied in the quasistatic approximation. The eigenmodes of a self-affine surface manifest strongly inhomogeneous spatial distributions characterized by various degree of localization. On a metal self-affine film, the intensities in areas of high local fields (‘‘hot’’ zones) exceed the applied field intensity by approximately three orders of magnitude. The spatial locations of the hot zones are very strong functions of the frequency and polarization of the incident light. © 1996 The American Physical Society.