Asymmetric planar terahertz metamaterials

Ranjan Singh; Ibraheem A.I. Al-Naib; Martin Koch; Weili Zhang

doi:10.1364/OE.18.013044

Asymmetric planar terahertz metamaterials

Ranjan Singh^*, Ibraheem A.I. Al-Naib, Martin Koch, Weili Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

116 Scopus citations

Abstract

We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time-domain spectroscopy. Breaking the symmetry in SRRs by gradually displacing the capacitive gap from the centre towards the corner of the ring allows for an 85% modulation of the fundamental inductive-capacitive resonance. Increasing asymmetry leads to the evolution of an otherwise inaccessible high quality factor electric quadrupole resonance that can be exploited for bio-sensing applications in the terahertz region.

Original language	English
Pages (from-to)	13044-13050
Number of pages	7
Journal	Optics Express
Volume	18
Issue number	12
DOIs	https://doi.org/10.1364/OE.18.013044
State	Published - 7 Jun 2010
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Asymmetric planar terahertz metamaterials",

abstract = "We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time-domain spectroscopy. Breaking the symmetry in SRRs by gradually displacing the capacitive gap from the centre towards the corner of the ring allows for an 85\% modulation of the fundamental inductive-capacitive resonance. Increasing asymmetry leads to the evolution of an otherwise inaccessible high quality factor electric quadrupole resonance that can be exploited for bio-sensing applications in the terahertz region.",

author = "Ranjan Singh and Al-Naib, \{Ibraheem A.I.\} and Martin Koch and Weili Zhang",

year = "2010",

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doi = "10.1364/OE.18.013044",

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T1 - Asymmetric planar terahertz metamaterials

AU - Singh, Ranjan

AU - Al-Naib, Ibraheem A.I.

AU - Koch, Martin

AU - Zhang, Weili

PY - 2010/6/7

Y1 - 2010/6/7

N2 - We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time-domain spectroscopy. Breaking the symmetry in SRRs by gradually displacing the capacitive gap from the centre towards the corner of the ring allows for an 85% modulation of the fundamental inductive-capacitive resonance. Increasing asymmetry leads to the evolution of an otherwise inaccessible high quality factor electric quadrupole resonance that can be exploited for bio-sensing applications in the terahertz region.

AB - We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time-domain spectroscopy. Breaking the symmetry in SRRs by gradually displacing the capacitive gap from the centre towards the corner of the ring allows for an 85% modulation of the fundamental inductive-capacitive resonance. Increasing asymmetry leads to the evolution of an otherwise inaccessible high quality factor electric quadrupole resonance that can be exploited for bio-sensing applications in the terahertz region.

UR - https://www.scopus.com/pages/publications/77953583348

U2 - 10.1364/OE.18.013044

DO - 10.1364/OE.18.013044

M3 - Article

AN - SCOPUS:77953583348

SN - 1094-4087

VL - 18

SP - 13044

EP - 13050

JO - Optics Express

JF - Optics Express

IS - 12

ER -

Asymmetric planar terahertz metamaterials

Abstract

ASJC Scopus subject areas

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