In:
Applied Physics Letters, AIP Publishing, Vol. 94, No. 18 ( 2009-05-04)
Abstract:
We study terahertz properties of periodic arrays of subwavelength metallic ring and coaxial ring-disk structures. Terahertz time-domain spectroscopy and numerical simulations have revealed unique resonance behaviors at terahertz frequencies. A high-frequency antisymmetric resonance in the rings concurs simultaneously with the symmetric mode. In the coaxial structures, the strong and weak resonance interactions are characterized by the plasmon hybridization theory, while the anomalous interaction results in a degenerate resonance which has not yet been observed at visible frequencies. The frequency tunability and strong electric field enhancement in such subwavelength structures are promising in terahertz sensing, spectroscopy, and integrated components.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2009
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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