Enhancement of Extraordinary Optical Transmission in a Double Heterostructure Plasmonic Bandgap Cavity
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- Marani, R., Marrocco, V., Grande, M. et al. Plasmonics (2011) 6: 469. doi:10.1007/s11468-011-9225-4
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In this paper, a novel plasmonic bandgap cavity inducing the enhancement of extraordinary optical transmission is presented. Numerical simulations have been performed to model a free-standing structure made of a one-dimensional periodic arrangement of gold strips. Two different values of the lattice constant have been properly chosen to realize a double heterostructure-like cavity to accomplish extraordinary optical transmission assisted by the formation of a plasmonic bandgap in the adjacent regions. Numerical results prove the capability of this optical device to efficiently transmit input light beams with far-field transmission values close to 100% due to the excitation of surface plasmon polariton resonant modes.