Researchers from the Dutch institute DIFFER, Eindhoven, demonstrate an elegant way to enhance electro-magnetically induced transparency in meta-materials without being constraint by the resolution limitations of fabrication tools. While earlier methods relied on
extremely narrow spaced structures with strong electromagnetic coupling, Halpin et al. showed now in a recent article in Phys. Rev. B that such difficult to fabricate structures can be avoided by tuning the long range coupling states of periodic metamaterials to the individual resonance frequencies of the involved metamolecules.
This electrodynamic behavior of the enhanced metamaterial was verified by near-field measurements using the THz near-field probe TeraSpike TD-800-X-HR from Protemics.