Abstract

Recent progress in the theory of surface electromagnetic fields is reviewed. Difficulties are noted in applying the textbook theory of refraction to fields withinA˚of a surface. These difficulties have been overcome with the development of a nonlocal description of surface optics, that has largely been applied to free-electron metal surfaces. Various model versions of non-local surface optics are described and quantitatively compared. Opportunities for, and actual contact between the theory of surface electromagnetic fields and experiment are described. Directions for future research in the area are discussed.

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