Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.177401
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Funding
- NSFC [11174221, 10974144, 60678046]
- CNKBRSF [2011CB922001]
- Hong Kong RGC [600209]
- National 863 Program of China [2006AA03Z407]
- NCET [07-0621]
- STCSM
- SHEDF [06SG24]
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This study demonstrates theoretically and experimentally that a metallic helix array can operate as a highly transparent broadband wave plate in propagation directions perpendicular to the axis of helices. The functionality arises from a special property of the helix array, namely, that two branches of elliptically right-handed and left-handed polarized states are nearly rigidly shifted in frequency and their dispersions are controlled by different mechanisms that can be independently tuned by structural parameters.
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