Lateral displacement of a beam incident from a uniaxial medium onto a metal

Author: Bonomo N. E.   Gigli M. L.   Depine R. A.  

Publisher: Taylor & Francis Ltd

ISSN: 1362-3044

Source: Journal of Modern Optics, Vol.44, Iss.7, 1997-07, pp. : 1393-1408

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Abstract

Abstract. T he reflection of spatially limited beams at the flat boundary between a uniaxial crystal and a metal is studied theoretically. Incident limited beams are expanded in terms of the ordinary and extraordinary plane waves that can be propagated in uniaxial media. T he spatial modifications in ordinary and extraordinary reflected field distributions are numerically calculated. Several effects, including polarization conversion between ordinary and extraordinary waves and field enhancement on the interface due to the excitation of surface waves, are discussed. T he numerical calculations of the Goos-Hanchen lateral shift in the reflected fields are compared with the results predicted by the extension to uniaxial media of the stationary phase approximation used for limited beams in isotropic media.