Paper
10 September 2010 Active mid-infrared plasmonic beam steering devices
Author Affiliations +
Abstract
We demonstrate the steering of coherent mid-infrared radiation through plasmonic structures consisting of a single sub-wavelength slit flanked by a periodic array of grooves, fabricated on GaAs substrates. We demonstrate control of steering angle by tuning the incident radiation, and study beam quality for the transmitted light. In addition, we demonstrate that small shifts in the refractive index of the GaAs substrate can actively control the steering angle of the transmitted light, opening a path towards the development of no-moving-parts plasmonic beam steering devices.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. C. Adams, T. Ribaudo, S. Thongrattanasiri, E. A. Shaner, V. A. Podolskiy, and D. Wasserman "Active mid-infrared plasmonic beam steering devices", Proc. SPIE 7756, Active Photonic Materials III, 775616 (10 September 2010); https://doi.org/10.1117/12.859285
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KEYWORDS
Plasmonics

Mid-IR

Beam steering

Gallium arsenide

Interfaces

Semiconductors

Surface plasmons

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