Plasmonic films with a periodic arrangement of subwavelength slits

Peter B. Catrysse; Georgios Veronis; Jung-Tsung Shen; Hocheol Shin; Shanhui Fan

doi:10.1117/12.648510

1 March 2006 Plasmonic films with a periodic arrangement of subwavelength slits

Peter B. Catrysse, Georgios Veronis, Jung-Tsung Shen, Hocheol Shin, Shanhui Fan

Proceedings Volume 6128, Photonic Crystal Materials and Devices IV; 612818 (2006) https://doi.org/10.1117/12.648510
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

In a recent paper [Phys. Rev. Lett. 94, 197401 (2005)], we introduced a mechanism for creating artificial high refractive index metamaterials by exploiting the existence of sub-wavelength propagating modes in metallic systems. We showed that a perfect metal film with a periodic arrangement of sub-wavelength cut-through slits can be regarded as a dielectric slab with a frequency-independent effective index. Here, we discuss the optical properties of such a system when the perfect metal condition is no longer valid, e.g., in the visible and near infrared wavelength regimes. If the metal obeys a plasmonic dispersion model, we find that films with a periodic arrangement of sub-wavelength slits support two distinct types of guided modes: a surface mode and a set of effective dielectric slab modes. We show how the behavior of both modes is affected by film thickness and surface properties.

Citation Download Citation

Peter B. Catrysse, Georgios Veronis, Jung-Tsung Shen, Hocheol Shin, and Shanhui Fan "Plasmonic films with a periodic arrangement of subwavelength slits", Proc. SPIE 6128, Photonic Crystal Materials and Devices IV, 612818 (1 March 2006); https://doi.org/10.1117/12.648510

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