Inverse Smith–Purcell effect near rough surfaces

Near-Field Imaging of Infinite Rough Surfaces

This paper is concerned with an inverse rough surface scattering problem in near-field optical imaging, which is to reconstruct the scattering surface with a resolution beyond the diffraction limit. The surface is assumed to be a small and smooth deformation of a plane surface. Based on a transformed field expansion, the boundary value problem with complex scattering surface is converted into a...

Fluorescence quenching in molecules near rough metal surfaces

A classical electrodynamic near field calculation for the interaction of a Drude oscillator molecular dipole with a rough metal surface is presented. Effects of electromagnetic coupling between surface bumps (assumed to be prolate hemispheroids) and the bulk metal are included. Fluorescence lifetimes are found to be two to four orders of magnitude smaller than those predicted for a flat plane i...

Near-Field Imaging of Infinite Rough Surfaces in Dielectric Media

This paper is concerned with an inverse surface scattering problem in near-field optical imaging, which is to reconstruct the scattering surface of a dielectric medium with a resolution beyond the diffraction limit. It is a nontrivial extension of the authors’ work on near-field imaging of infinite rough surfaces from impenetrable to penetrable media [G. Bao and P. Li, SIAM J. Appl. Math., 73 (...

Modeling Rough Surfaces

Scattering-reduction effect with overcoated rough surfaces: theory and experiment.

We show that a scattering-reduction effect is obtained by coating a rough surface with an antireflection layer. This research is a generalization of Amra's [J. Opt. Soc. Am. A 10, 365-374 (1993)] study of smooth surfaces conducted with a first-order theory to the case of rough surfaces. We show that the differential method with the R matrix algorithm can be used to study scattering from multila...