Near-complete transmission through subwavelength hole arrays in phonon-polaritonic thin films

Peter B. Catrysse, Shanhui Fan
2007 Physical Review B  
We report that phonon-polaritonic thin films with a periodic array of subwavelength holes allow nearcomplete transmission in the polariton gap where a homogeneous film completely suppresses transmission. We find that both propagating modes inside the subwavelength holes and surface resonances on the film interfaces play a crucial role in the transmission behavior. In the frequency range where both occur simultaneously, they interfere destructively and completely suppress transmission. When both
more » ... mechanisms are spectrally separated, each individually results in enhanced transmission.
doi:10.1103/physrevb.75.075422 fatcat:oulpzn6wgngabhmzapnokbmole