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. © SPIE. Downloading of the abstract is permitted for personal use only.

authors

• González Contreras Francisco Javier
• Peale R.E.

publication date

• 2021-01-01

published in

• Proceedings of SPIE - The International Society for Optical Engineering  Proceedings

keywords

• Infrared detector; Infrared pixel; Seebeck nanoantennas Bias voltage; Bolometers; Carbon nanotubes; Infrared detectors; Nanoantennas; Thermoelectric equipment; Thermography (imaging); 'current; Design and optimization; Focal-plane arrays; Infrared imaging systems; Infrared pixel; Nanoantennae; Power; Seebeck; Seebeck nanoantenna; Terahertz imaging systems; Pixels

Digital Object Identifier (DOI)

• 10.1117/12.2595067

PubMed ID

start page

end page

volume

• 11830

issue