Terahertz chiral metamaterials with giant and dynamically tunable optical activity | Zendy

Jiangfeng Zhou | Zendy; Dibakar Roy Chowdhury | Zendy; Rongkuo Zhao | Zendy; Abul K. Azad | Zendy; HouTong Chen | Zendy; Costas M. Soukoulis | Zendy; Antoinette J. Taylor | Zendy; John F. O’Hara | Zendy

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Terahertz chiral metamaterials with giant and dynamically tunable optical activity

Author(s) -

Jiangfeng Zhou,

Dibakar Roy Chowdhury,

Rongkuo Zhao,

Abul K. Azad,

HouTong Chen,

Costas M. Soukoulis,

Antoinette J. Taylor,

John F. O’Hara

Publication year - 2012

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.86.035448

Subject(s) - metamaterial , terahertz radiation , materials science , chirality (physics) , optoelectronics , infrared , excitation , photonic metamaterial , optics , physics , chiral anomaly , fermion , quantum mechanics , nambu–jona lasinio model

We demonstrated giant optical activity using a chiral metamaterial composed of an array of conjugated bilayer metal structures. The chiral metamaterials were further integrated with photoactive inclusions to accomplish a wide tuning range of the optical activity through illumination with near-infrared light. The strong chirality observed in our metamaterials results in a negative refractive index, which can also be well controlled by the near-infrared optical excitation.

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