3D woodpile structure tunable plasma photonic crystal

TL;DR

This paper presents the design, simulation, and experimental validation of a reconfigurable 3D woodpile plasma photonic crystal operating in the S-X band, demonstrating dynamic electromagnetic responses and mode coupling phenomena.

Contribution

It introduces a novel tunable plasma photonic crystal with individual discharge control, enabling detailed study of mode interactions and Fano resonance effects.

Findings

Experimental and simulation results confirm mode coupling via Fano resonance.

Reconfigurability allows control over Bragg and surface plasmon modes.

Rich dynamic electromagnetic responses observed in the S-X band.

Abstract

A 3D woodpile structure tunable plasma photonic crystal is designed, simulated, and experimentally characterized over the S - X band of the electromagnetic spectrum. The measurements confirm that the electromagnetic 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.