Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index

Jianfeng Wu; Binghao Ng; Shuvan P. Turaga; Mark B.H. Breese; Stefan A. Maier; Minghui Hong; Andrew A. Bettiol; Herbert O. Moser

doi:10.1063/1.4823594

Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index

Jianfeng Wu, Binghao Ng, Shuvan P. Turaga, Mark B.H. Breese, Stefan A. Maier, Minghui Hong, Andrew A. Bettiol, Herbert O. Moser

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

38 Citations (Scopus)

Abstract

A chiral meta-foil consisting of a self-supported square array of interconnected conjugated rosettes is demonstrated at terahertz frequencies. It exhibits strong optical activity and circular dichroism. Negative refractive index with a figure-of-merit as high as 4.2 is achieved, attributed to its free-standing nature. Experimental results are in good agreement with numerical simulation. Free-standing chiral meta-foils provide a unique approach to create a completely all-metal chiral metamaterial, which can be flexibly integrated into optical setups while eliminating dielectric insertion losses.

Original language	English
Article number	141106
Number of pages	5
Journal	Applied Physics Letters
Volume	103
Issue number	14
DOIs	https://doi.org/10.1063/1.4823594
Publication status	Published - 30 Sept 2013
Externally published	Yes

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title = "Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index",

abstract = "A chiral meta-foil consisting of a self-supported square array of interconnected conjugated rosettes is demonstrated at terahertz frequencies. It exhibits strong optical activity and circular dichroism. Negative refractive index with a figure-of-merit as high as 4.2 is achieved, attributed to its free-standing nature. Experimental results are in good agreement with numerical simulation. Free-standing chiral meta-foils provide a unique approach to create a completely all-metal chiral metamaterial, which can be flexibly integrated into optical setups while eliminating dielectric insertion losses.",

author = "Jianfeng Wu and Binghao Ng and Turaga, {Shuvan P.} and Breese, {Mark B.H.} and Maier, {Stefan A.} and Minghui Hong and Bettiol, {Andrew A.} and Moser, {Herbert O.}",

note = "Funding Information: This work was supported by the NUS Core Support C-380-003-003-001, and the funding provided by the EPSRC and the Leverhulme Trust.",

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doi = "10.1063/1.4823594",

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AU - Wu, Jianfeng

AU - Ng, Binghao

AU - Turaga, Shuvan P.

AU - Breese, Mark B.H.

AU - Maier, Stefan A.

AU - Hong, Minghui

AU - Bettiol, Andrew A.

AU - Moser, Herbert O.

N1 - Funding Information: This work was supported by the NUS Core Support C-380-003-003-001, and the funding provided by the EPSRC and the Leverhulme Trust.

PY - 2013/9/30

Y1 - 2013/9/30

N2 - A chiral meta-foil consisting of a self-supported square array of interconnected conjugated rosettes is demonstrated at terahertz frequencies. It exhibits strong optical activity and circular dichroism. Negative refractive index with a figure-of-merit as high as 4.2 is achieved, attributed to its free-standing nature. Experimental results are in good agreement with numerical simulation. Free-standing chiral meta-foils provide a unique approach to create a completely all-metal chiral metamaterial, which can be flexibly integrated into optical setups while eliminating dielectric insertion losses.

AB - A chiral meta-foil consisting of a self-supported square array of interconnected conjugated rosettes is demonstrated at terahertz frequencies. It exhibits strong optical activity and circular dichroism. Negative refractive index with a figure-of-merit as high as 4.2 is achieved, attributed to its free-standing nature. Experimental results are in good agreement with numerical simulation. Free-standing chiral meta-foils provide a unique approach to create a completely all-metal chiral metamaterial, which can be flexibly integrated into optical setups while eliminating dielectric insertion losses.

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JO - Applied Physics Letters

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Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index

Abstract

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