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arXiv 0905.4105physics.optics
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金属纳米棒偏振器的时域有限差分法分析

Analysis of a metallic nano-rod polarizer using finite-difference-time-domain method

Young-Gu Ju

摘要:

采用时域有限差分法分析了金属纳米棒的极化行为。当纳米棒之间的平均间距小于半波长时,该层反射平行于纳米棒偏振的光,如在纳米狭缝中。然而,当间距大于半波长时,金属表面吸收垂直于杆偏振的光,导致偏振反转。多层纳米棒可以制成具有高消光比和良好透射率的偏振器。

英文摘要:

The polarization behavior of metallic nano-rods has been analyzed by means of the finite-difference-time-domain method. When the average spacing between the nano-rods is less than a half wavelength, the layer reflects the light polarized parallel to the nano-rods, as in a nano-slit. However, when the spacing is larger than a half wavelength, the metallic surface absorbs the light, polarized perpendicular to the rods, leading to a polarization reversal. Multiple layers of nano-rods can make a polarizer with a high extinction ratio and good transmittance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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