Surface plasmon polaritons assisted diffraction in periodic subwavelength holes of metal films with reduced interplane coupling
arXiv:0708.1532 · doi:10.1103/PhysRevLett.99.066805
Abstract
Metal films grown on Si wafer perforated with a periodic array of subwavelength holes have been fabricated and anomalous enhanced transmission in the mid-infrared regime has been observed. High order transmission peaks up to Si(2,2) are clearly revealed due to the large dielectric constant contrast of the dielectrics at the opposite interfaces. Si(1,1) peak splits at oblique incidence both in TE and TM polarization, which confirms that anomalous enhanced transmission is a surface plasmon polaritons (SPPs) assisted diffraction phenomenon. Theoretical transmission spectra agree excellently with the experimental results and confirm the role of SPPs diffraction by the lattice.
4 pages, 5 figures, 26 references
References in corpus (6)
- Theory of extraordinary optical transmission through subwavelength hole arrays
- Transmission resonances on metallic gratings with very narrow slits
- On the transmission of light through a single rectangular hole
- Energy-time entanglement preservation in plasmon-assisted light transmission
- Surface wave generation and propagation on metallic subwavelength structures measured by far-field interferometry
- Huygens description of resonance phenomena in subwavelength hole arrays