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. Author manuscript; available in PMC: 2011 Oct 13.
Published in final edited form as: Nano Lett. 2010 Oct 13;10(10):4111–4116. doi: 10.1021/nl1022892

Figure 4. Plasmon-enhanced transmission provides means to tune the optical throughput by polarization.

Figure 4

Nanoholes were patterned with an aspect ratio of 7:1 (350 nm × 50 nm). (A) At the plasmon resonance, the transmission intensity of TM light (electric field along the short axis of the nanoholes) at λ = 620 nm was more than two orders of magnitude higher than that under TE light. The intensity difference was also observed in the confocal scanning optical images under (B) TM- and (C) TE-polarized illumination.