Giant chiral optical response from a twisted-arc metamaterial

Yonghao Cui; Lei Kang; Shoufeng Lan; Sean Rodrigues; Wenshan Cai

doi:10.1021/nl404572u

Giant chiral optical response from a twisted-arc metamaterial

Yonghao Cui, Lei Kang, Shoufeng Lan, Sean Rodrigues, Wenshan Cai

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281 Scopus citations

Abstract

We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of ∼λ/6. Experimental results reveal a circular dichroism of ∼0.35 in the absolute value and a maximum polarization rotation of ∼305 /λ in a near-infrared wavelength region. A transmission of greater than 50% is achieved at the frequency where the polarization rotation peaks. Retrieved parameters from measured quantities further indicate an actual optical activity of 76 per λ and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.

Original language	English (US)
Pages (from-to)	1021-1025
Number of pages	5
Journal	Nano letters
Volume	14
Issue number	2
DOIs	https://doi.org/10.1021/nl404572u
State	Published - Feb 12 2014

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl404572u

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title = "Giant chiral optical response from a twisted-arc metamaterial",

abstract = "We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of ∼λ/6. Experimental results reveal a circular dichroism of ∼0.35 in the absolute value and a maximum polarization rotation of ∼305 /λ in a near-infrared wavelength region. A transmission of greater than 50% is achieved at the frequency where the polarization rotation peaks. Retrieved parameters from measured quantities further indicate an actual optical activity of 76 per λ and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.",

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T1 - Giant chiral optical response from a twisted-arc metamaterial

AU - Cui, Yonghao

AU - Kang, Lei

AU - Lan, Shoufeng

AU - Rodrigues, Sean

AU - Cai, Wenshan

PY - 2014/2/12

Y1 - 2014/2/12

N2 - We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of ∼λ/6. Experimental results reveal a circular dichroism of ∼0.35 in the absolute value and a maximum polarization rotation of ∼305 /λ in a near-infrared wavelength region. A transmission of greater than 50% is achieved at the frequency where the polarization rotation peaks. Retrieved parameters from measured quantities further indicate an actual optical activity of 76 per λ and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.

AB - We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of ∼λ/6. Experimental results reveal a circular dichroism of ∼0.35 in the absolute value and a maximum polarization rotation of ∼305 /λ in a near-infrared wavelength region. A transmission of greater than 50% is achieved at the frequency where the polarization rotation peaks. Retrieved parameters from measured quantities further indicate an actual optical activity of 76 per λ and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.

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Giant chiral optical response from a twisted-arc metamaterial

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