Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4861422
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Funding
- National Natural Science Foundation of China [91123032, 61205185, 61275048, 61275171, 61205194, 60907019]
- National Basic Research Program of China [2010CB934103]
- International Cooperation Program of MOST [2010DFA01180]
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We present the design and realization of ultra-thin chiral metasurfaces with giant broadband optical activity in the infrared wavelength. The chiral metasurfaces consisting of periodic hole arrays of complementary asymmetric split ring resonators are fabricated by femtosecond laser two-photon polymerization. Enhanced transmission with strong polarization conversion up to 97% is observed owing to the chiral surface plasmons resulting from mirror symmetry broken. The dependence of optical activity on the degree of structural asymmetry is investigated. This simple planar metasurface is expected to be useful for designing ultra-thin active devices and tailoring the polarization behavior of complex metallic nanostructures. (C) 2014 AIP Publishing LLC.
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