Details

Autor(en) / Beteiligte

• Burrow, Joshua A.
• Yahiaoui, Riad
• Sarangan, Andrew
• Mathews, Jay
• Agha, Imad
• Searles, Thomas A.

Titel

Eigenmode hybridization enables lattice-induced transparency in symmetric terahertz metasurfaces for slow light applications

Ist Teil von

• Optics letters, 2019-06, Vol.44 (11), p.2705

Ort / Verlag

Washington: Optical Society of America

Erscheinungsjahr

2019

Quelle

OSA_美国光学学会数据库1

Beschreibungen/Notizen

• Traditional lattice-induced transparency demonstrations are activated by varying the meta-atom lattice constant such that the plasmonic and lattice modes interfere. Here we report on the observation of enhanced coupling between two eigenmodes (first- and second-order) by varying the lattice parameter in a symmetric split ring resonator design. The higher-order quasi-dark mode blueshifts, introducing strong coupling with the fundamental bright mode for periods above 345 μm. Numerical simulations are verified experimentally and supplemented with a two-oscillator model showing good agreement. Furthermore, larger positive group delay values are achieved in the vicinity of the transparency window with minimal absorption, indicating a strong potential for slow light applications.