Journal
OPTICS EXPRESS
Volume 19, Issue 5, Pages 4255-4260Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.004255
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Funding
- Natural Science Foundation of China (NSFC) [10874024, 61007019, 50735007]
- Ministry of Education of China [200804871147]
- Natural Science Foundation of Hubei Province of China [2008CDB004]
- Central Colleges Basic Scientific Research Operating Expenses [2010MS063]
- China National Funds for Distinguished Young Scientists [66945021]
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In this paper, we proposed new structured metamaterials with multi-helical nanowires to construct circular polarizers with higher S/N ratios. Compared with the single-helical ones reported by J. K. Gansel et al. [Science 325, 1513 (2009), Opt. Express 18, 1059 (2010)], which has a lower S/N ratio (similar to 10 dB) due to the high intensity conversion, the circular polarizers with the multi-helical structures have average two orders higher S/N ratios (similar to 35 dB). Simultaneously, other optical performances, such as operation bands, average extinction ratios, are also improved. (C) 2011 Optical Society of America
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