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Terahertz chiral metamaterials with giant and dynamically tunable optical activity

TitleTerahertz chiral metamaterials with giant and dynamically tunable optical activity
Publication TypeJournal Article
Year of Publication2012
AuthorsZhou JF, Chowdhury DR, Zhao RK, Azad AK, Chen HT, Soukoulis CM, Taylor AJ, O'Hara JF
Journal TitlePhysical Review B
Volume86
Pages035448
Date Published07
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000306924200007
Keywordsindex, negative refraction, polarizer
Abstract

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.
URL<Go to ISI>://WOS:000306924200007
DOI10.1103/PhysRevB.86.035448
Alternate JournalPhys. Rev. B