No they don't. Thermal imagers typically work around 50 K (based on HgCdTe sensors). This is easy to reach with a portable device, but isn't anywhere close to super-cooled. Higher performance thermal imagers may run at 3 to 4 K, cooled with liquid helium. There you are already far away from the portable solution, and again not even close to super-cooled.
To reach super cooled temperatures (we are speaking of mK, if not uK or nK), you'll need a truck to move the stuff around. Just the ultra high vacuum vessel and the turbo pumps, allowing you to reach vacuum better than in orbit at 200 km altitude, are enough... and you haven't started to cool yet.