Excitation of remarkably nondispersive surface plasmons on a nondiffracting, dual-pitch metal grating
Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R.
Date: 26 March 2002
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Publisher DOI
Abstract
A nondiffracting metallic lamellar grating formed from three equally spaced grooves per repeat period, with one being slightly shallower than the other two is examined at microwave frequencies. When filled with a slightly lossy dielectric, this structure supports a remarkably nondispersive surface plasmon polariton mode, which exhibits ...
A nondiffracting metallic lamellar grating formed from three equally spaced grooves per repeat period, with one being slightly shallower than the other two is examined at microwave frequencies. When filled with a slightly lossy dielectric, this structure supports a remarkably nondispersive surface plasmon polariton mode, which exhibits strong selective absorption of incident power. Measured reflectivities show excellent agreement with the results predicted by a rigorous coupled wave theory.
Physics and Astronomy
Faculty of Environment, Science and Economy
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