Extraordinarily transmitting arrays are promising
candidates for quasi-optical (QO) components due to their high
frequency selectivity and beam scanning capabilities owing to
the leaky-wave mechanism involved. We show here how by
breaking certain unit cell and lattice symmetries, one can
achieve a rich family of transmission ...
Extraordinarily transmitting arrays are promising
candidates for quasi-optical (QO) components due to their high
frequency selectivity and beam scanning capabilities owing to
the leaky-wave mechanism involved. We show here how by
breaking certain unit cell and lattice symmetries, one can
achieve a rich family of transmission resonances associated with
the leaky-wave dispersion along the surface of the array. By
combining two dimensional and one dimensional periodic Method
of Moments (MoM) calculations with QO Terahertz (THz) timedomain measurements, we provide physical insight, numerical
and experimental demonstration of the different mechanisms
involved in the resonances associated with the extraordinary
transmission peaks and how these evolve with the number of
slots. Thanks to the THz instrument used, we are also able to
explore the time-dependent emission of the different frequency
components involved.