Plasmonic mid-infrared beam steering

D. C. Adams, S. Thongrattanasiri, T. Ribaudo, V. A. Podolskiy, D. Wasserman

Research output: Contribution to journalArticlepeer-review

Abstract

We present a metal/semiconductor beam steering device for use in the mid-infrared wavelength range. We demonstrate how changing the frequency of the incident light results in a smoothly varying shift in the angular distribution of the transmitted beam, and we present an analysis of the beam profile for a number of different wavelengths. Finally we verify that a similar steering effect is achieved with fixed frequency incident light and a modification of the permittivity of the semiconductor substrate, ultimately resulting in a 3° shift in the transmitted beam angle for minimal shifts in the semiconductor permittivity.

Original languageEnglish (US)
Article number201112
JournalApplied Physics Letters
Volume96
Issue number20
DOIs
StatePublished - May 17 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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