Diffraction-Limited Imaging Demonstration using a Silicon Integrated Array at Terahertz Frequencies
M. Hoogelander (TU Delft - Tera-Hertz Sensing)
E.S. Malotaux (TU Delft - Electronics)
Maria Alonso Del Pino (TU Delft - Tera-Hertz Sensing)
Marco Spirito (TU Delft - Electronics)
A Neto (TU Delft - Tera-Hertz Sensing)
Daniele Cavallo (TU Delft - Tera-Hertz Sensing)
N Llombart (TU Delft - Tera-Hertz Sensing)
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Abstract
In this contribution we will present the diffraction-limited imaging capabilities of a focal plane array (FPA) of antenna-coupled direct-detectors at submillimeter wavelengths. The FPA prototype is a tightly sampled, 12-pixel array that was developed in a 22 nm CMOS technology and it covers a band from 200 GHz to 600 GHz. A quasi-optical (QO) setup was developed to actively illuminate this FPA in order to perform imaging with > 40 dB SNR. The resulting images will be the first that have diffraction-limited angular resolution at these wavelengths, which demonstrates that this FPA design can be very attractive for future passive THz imaging applications.