The diffraction of light by a single subwavelength hole in a highly conductive metallic sheet is analyzed with a recently developed differential theory that is able to plot the nearly electromagnetic field. Using rigorous electromagnetic and phenomenological analysis, we show that a single subwavelength hole can excite surface-plasmon resonance that contributes greatly to extraordinary transmission.
© 2005 Optical Society of America
Evgeny Popov, Nicolas Bonod, Michel Nevière, Hervé Rigneault, Pierre-François Lenne, and Patrick Chaumet, "Surface plasmon excitation on a single subwavelength hole in a metallic sheet," Appl. Opt. 44, 2332-2337 (2005)