Integral Equation Time Domain Analysis of Frequency-dependent Transmission through Aperture Arrays

Whereas a single sub-wavelength aperture transmits little light, much greater transmission is observed through an array of such apertures. Plainly the apertures interact, at a length scale related to their spacing, and encourage the transmission of the light through the small holes. This behaviour is studied via solution of the governing Maxwell equations in the space surrounding the perforated plate, and the field distributions associated with this anomalous transmission are investigated.