The reflection and transmission of tightly focused azimuthally and linearly polarized electromagnetic wave beams with subwavelength spot size at a dielectric interface are investigated. A substantial increase of the reflectance of a light beam that is normally incident from a higher-index medium to a lower-index medium and a decrease of the reflectance of a beam that is incident from a lower-index medium to a higher-index dielectric medium in comparison with the Fresnel reflectance are predicted.
© 2004 Optical Society of America
(260.1960) Physical optics : Diffraction theory
(260.2110) Physical optics : Electromagnetic optics
(260.5430) Physical optics : Polarization
(350.5500) Other areas of optics : Propagation
(350.7420) Other areas of optics : Waves
Nikolai I. Petrov, "Reflection and transmission of strongly focused vector beams at a dielectric interface," Opt. Lett. 29, 421-423 (2004)