Extraordinary optical transmission inside a waveguide: spatial mode dependence | Zendy

Kimberly S. Reichel | Zendy; Peter Y. Lu | Zendy; Sterling Backus | Zendy; Rajind Mendis | Zendy; Daniel M. Mittleman | Zendy

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Extraordinary optical transmission inside a waveguide: spatial mode dependence

Author(s) -

Kimberly S. Reichel,

Peter Y. Lu,

Sterling Backus,

Rajind Mendis,

Daniel M. Mittleman

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.028221

Subject(s) - optics , extraordinary optical transmission , terahertz radiation , waveguide , surface plasmon , materials science , transmission (telecommunications) , excitation , plasmon , optoelectronics , physics , surface plasmon polariton , telecommunications , computer science , quantum mechanics

We study the influence of the input spatial mode on the extraordinary optical transmission (EOT) effect. By placing a metal screen with a 1D array of subwavelength holes inside a terahertz (THz) parallel-plate waveguide (PPWG), we can directly compare the transmission spectra with different input waveguide modes. We observe that the transmitted spectrum depends strongly on the input mode. A conventional description of EOT based on the excitation of surface plasmons is not predictive in all cases. Instead, we utilize a formalism based on impedance matching, which accurately predicts the spectral resonances for both TEM and non-TEM input modes.

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