Design and optimization of an infrared pixel based on Seebeck nanoantennas

Francisco J. González; Robert E. Peale

doi:10.1117/12.2595067

1 August 2021 Design and optimization of an infrared pixel based on Seebeck nanoantennas

Proceedings Volume 11830, Infrared Remote Sensing and Instrumentation XXIX; 1183006 (2021) https://doi.org/10.1117/12.2595067
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Commercial Infrared and Terahertz imaging systems have a focal plane array made of bolometric elements which form the pixels in the imaging system. Bolometers have the disadvantage of being slow and require a bias voltage to operate, which increases the power required to operate the infrared imaging system. The current trend is to transition to small size, weight, and power (SWaP) imaging systems. Seebeck nanoantennas are resonant elements made of two dissimilar thermoelectric materials tuned at a particular wavelength, when this wavelength is incident on the nanoantenna it induces a current that increases the temperature at the feed of the nanaontenna generating a temperature difference that produces a Seebeck voltage. Due to the small size of the antenna and its low thermal mass it makes Seebeck nanoantennas considerably faster than tradition bolometers. Also, since the thermoelectric elements provide an output voltage no bias is needed for operation, reducing the power required by the FPA. In this work an infrared pixel is designed and optimized for detection in the 8-12μm wavelength range, and its thermoelectric voltage is calculated using numerical simulations for different pixel pitch sizes.

Citation Download Citation

Francisco J. González and Robert E. Peale "Design and optimization of an infrared pixel based on Seebeck nanoantennas", Proc. SPIE 11830, Infrared Remote Sensing and Instrumentation XXIX, 1183006 (1 August 2021); https://doi.org/10.1117/12.2595067

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