Multipolar effects and strong coupling in hybrid plasmonic metamaterials

Arash Farhang; Anantha Ramakrishna; Olivier J. F. Martin

doi:10.1117/12.908923

22 February 2012 Multipolar effects and strong coupling in hybrid plasmonic metamaterials

Arash Farhang, Anantha Ramakrishna, Olivier J. F. Martin

Proceedings Volume 8269, Photonic and Phononic Properties of Engineered Nanostructures II; 82691B (2012) https://doi.org/10.1117/12.908923
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Recently stacked metamaterial structures coupled to a conductive plane have been investigated and have been shown to exhibit the same properties as stacked structures with double the layers, due to dipole mirror coupling. Here we study a system of stacked subwavelength metallic grating layers coupled to a metal film and show that this system not only supports the localized modes of a doubly layered structure, but also, for non-normal incidence, supports modes that exhibit a clear propagation and in one case a simultaneous localization of the electromagnetic field in the region between the metal film and the first grating layer. Furthermore we show that this hybridized propagating mode, excited for any N number of periodic layers, is further influenced as it couples with the highest energy localized mode of the periodic layered stack. Additionally it is found that the localized modes of the structure can be spectrally positioned in a directly adjacent manner, resulting in wideband absorption that can effectively be tuned by varying the grating film spacing.

Citation Download Citation

Arash Farhang, Anantha Ramakrishna, and Olivier J. F. Martin "Multipolar effects and strong coupling in hybrid plasmonic metamaterials", Proc. SPIE 8269, Photonic and Phononic Properties of Engineered Nanostructures II, 82691B (22 February 2012); https://doi.org/10.1117/12.908923

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