Resonant transmission through metallic films is observed when a periodic array of holes is drilled. This phenomenon has been attributed to surface plasmon polaritons. We study a similar system made of an array of slits in a SiC film supporting surface phonon polaritons. We find a resonant transmission in the infrared. The role of surface waves is analyzed. We find that surface waves are excited at resonance but are not a necessary condition to obtain a resonant transmission.
© 2004 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(230.3990) Optical devices : Micro-optical devices
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
F. Marquier, K. Joulain, and J.-J. Greffet, "Resonant infrared transmission through SiC films," Opt. Lett. 29, 2178-2180 (2004)