Enhanced transmission and reflection of few-cycle pulses by a single slit |
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Authors: | Mechler M Samek O Kukhlevsky S V |
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Affiliation: | South-Trans-Danubian Cooperative Research Centre, University of Pécs, Ifjúság u. 6., 7624 Pécs, Hungary. |
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Abstract: | We show that a physical mechanism responsible for the enhanced transmission and reflection of ultrashort (few-cycle) pulses by a single subwavelength slit in a thick metallic film is the Fabry-Perot-like resonant excitation of stationary, quasistationary, and nonstationary waves inside the slit, which leads to the field enhancement inside and around the slit. The mechanism is universal for any pulse-scatter system, which supports the stationary resonances. We point out that there is a pulse duration limit below which the slit does not support the intraslit resonance. |
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