Abstract
A three-dimensional woodpile structure tunable plasma photonic crystal is designed, simulated, and experimentally characterized over the S–X band of the electromagnetic (EM) spectrum. The measurements confirm that the EM response is rich in dynamics. The photonic crystal’s reconfigurability achieved through individual discharge control of the properties of the woodpile plasma columns offers an unprecedented opportunity to better resolve the interactions between both the Bragg and localized surface plasmon modes which dominate the spectrum at lower frequencies. Both the experiments and simulations reveal evidence for the coupling of Bragg and surface plasmon modes through a Fano resonance.
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