期刊
OPTICS EXPRESS
卷 19, 期 18, 页码 17539-17545出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.017539
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资金
- Natural Science Foundation of China (NSFC) [61007019, 50735007]
- Ministry of Education of China [200804871147]
- Natural Science Foundation of Hubei Province of China [2008CDB004]
- Special Funds of Central Colleges Basic Scientific Research Operating Expenses [2010MS063]
In the last few years, there has been growing interest in the research of the polarizing optics consisting of sub-wavelength metamaterials due to the advantages of broad wavelength ranges, high temperature durability, and compact structures. So far, the metallic structure with the sub-wavelength metamaterials has been proved to achieve the linearly and the circularly polarized light. Therefore, there should be one question raised easily: Is it possible for the metallic structure with sub-wavelength metamaterials to generate the elliptically polarized light? To answer this question, we proposed a metallic structure with elliptically helical nanowires, and analyzed the polarization states of the transmitted light using FDTD method. It is confirmed that this metallic structure does have a giant elliptical dichroism. Furthermore, we also compared the distinct optical performances of elliptical single-, double-, three-, and four-helixes, and made a qualitative explanation for them. (C) 2011 Optical Society of America
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