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Authors: H. Shen, B. Maes
Title: Enhanced optical transmission through tapered metallic gratings
Format: International Journal
Publication date: 6/2012
Journal/Conference/Book: Applied Physics Letters
Volume(Issue): 100(24) p.241104
DOI: 10.1063/1.4729005
Citations: 38 ( - last update: 21/7/2024)
27 (OpenCitations - last update: 10/5/2024)
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To achieve non-resonant behavior, we propose a metallic grating device with linearly tapered slits. The tapering provides a gradual impedance variation from the entrance to the exit of the slits, leading to broadband and wide-angle enhanced transmission in the infrared. In addition, the light is strongly localized and enhanced at the slit exits, in contrast with straight slits. We describe the phenomenon with a transmission line model, that is in accordance with rigorous simulations.

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