Beam-steering with mid- and long-wave-infrared nanoantennas

Gergo P. Szakmany; Edward C. Kinzel; Gary H. Bernstein; David Burghoff; Chao Dong; Alexei O. Orlov; Wolfgang Porod; David Strobel; Stephen M. White

doi:10.1117/12.2618643

30 May 2022 Beam-steering with mid- and long-wave-infrared nanoantennas

Gergo P. Szakmany, Edward C. Kinzel, Gary H. Bernstein, David Burghoff, Chao Dong, Alexei O. Orlov, Wolfgang Porod, David Strobel, Stephen M. White

Author Affiliations +

Proceedings Volume 12107, Infrared Technology and Applications XLVIII; 121071L (2022) https://doi.org/10.1117/12.2618643
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Thermoelectrically coupled nanoantennas (TECNAs) are fast thermal sensors for the mid- to far-IR regime. TECNAs resonantly absorb EM radiation using a nanoantenna and nanothermocouple, and can be made directionally sensitive using a reflecting cavity. We present TECNAs located above a cavity etched into a substrate to determine angle of incidence of laser beams. The position of the antennas relative to the cavity center provides beam steering capability. We show in simulations that radiation and receiving characteristics of TECNAs are strongly dependent on position above the cavity. Positioning multiple antennas above a cavity provides angle-of-incidence resolution capability in the thermal infrared.

Conference Presentation

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Gergo P. Szakmany, Edward C. Kinzel, Gary H. Bernstein, David Burghoff, Chao Dong, Alexei O. Orlov, Wolfgang Porod, David Strobel, and Stephen M. White "Beam-steering with mid- and long-wave-infrared nanoantennas", Proc. SPIE 12107, Infrared Technology and Applications XLVIII, 121071L (30 May 2022); https://doi.org/10.1117/12.2618643

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