2009/01/04 by Ranjan Singh, Carsten Rockstuhl, F. Lederer +2 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Metamaterials and Metasurfaces Applications #Plasmonic and Surface Plasmon Research #Terahertz technology and applications #physics.optics
paper · pdf · doi:10.1103/physrevb.79.085111
arxiv created 2009/01/04 · openalex publication_date 2009/02/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Terahertz time domain spectroscopy and rigorous simulations are used to probe the coupling between a dark and a bright plasmonic eigenmode in a metamaterial with broken symmetry. The metamaterial consists of two closely spaced split ring resonators that have their gaps in nonidentical positions within the ring. For normal incidence and a fixed polarization both lowest-order eigenmodes of the split ring resonators can be excited, although one of them has to be regarded as dark since coupling is prohibited because of symmetry constraints. Emphasis in this work is put on a systematic evaluation of the coupling effects depending on a spectral tuning of both resonances.