Journal
APPLIED PHYSICS LETTERS
Volume 80, Issue 13, Pages 2410-2412Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1465518
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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. (C) 2002 American Institute of Physics.
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