Table 1.

THz scanner performance parameters.

Parameter	Value
Housing dimensions	37.3 $\times$ 14 $\times$ 25.1 cm${}^3$
Focus size	3.1 $\times$ 2.4 mm${}^2$
Focus depth	7.25 mm
Field of view	27 $\times$ 27 mm${}^2$
Pixel size	1 $\times$ 1 mm${}^2$
Number of time averages	20 averages per pixel
Scan time	3 min per field of view