Mid-infrared field concentration of electrically generated surface plasmons polaritons

A. Bousseksou; J.-P. Tetienne; R. Colombelli; A. Babuty; N. Rungsawang; Y. De Wilde; G. Beaudoin; I. Sagnes

doi:10.1117/12.906738

20 January 2012 Mid-infrared field concentration of electrically generated surface plasmons polaritons

A. Bousseksou, J.-P. Tetienne, R. Colombelli, A. Babuty, N. Rungsawang, Y. De Wilde, G. Beaudoin, I. Sagnes

Proceedings Volume 8268, Quantum Sensing and Nanophotonic Devices IX; 826803 (2012) https://doi.org/10.1117/12.906738
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Surface-plasmon polaritons (SPPs) are electromagnetic waves which are bound at a metal/dielectric interface. SPPs dispersion relation allows bent propagation and can lead to sub-wavelength energy concentration. These properties, well known in the visible and near-infrared, are lost at mid-infrared and THz wavelengths. Here we demonstrate an integrated device which is able to recover and exploit the confinement properties of SPPs. It operates in the mid-infrared wavelengths by electrical injection, It generates plasmonic excitations whose dispersion is artificially tailored via proper patterning of a purely metallic surface. We illustrate the power of this approach by demonstrating bending, focusing and sub-wavelength energy concentration. We demonstrate a compact (<0.1 mm2) device, which is electrically driven and is able to generate, couple, propagate on a chip over macroscopic distances, and focus mid infrared radiation into a subwavelength region.

Citation Download Citation

A. Bousseksou, J.-P. Tetienne, R. Colombelli, A. Babuty, N. Rungsawang, Y. De Wilde, G. Beaudoin, and I. Sagnes "Mid-infrared field concentration of electrically generated surface plasmons polaritons", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 826803 (20 January 2012); https://doi.org/10.1117/12.906738

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