Infrared

Infrared device and techniques (Rogalski) 0811

FLIR

Applications: night vision, remote sensing (satellite, crop status, pollution and climate change monitoring), military applications, medical IR imging, building energy loss study (IR imager), Fourier transform IR spectroscopy, IR astronomy, car driving, uncooled imagers

Detectors: Si (< 1um), PbS and InGaAs (< 3um), InSb, PbSe, PtSi (< 6um), HgCdTe (3-5um, 8-14um)

IR spectrum:

Thermal emission: spectral emissivity ε(λ), radiant emission, vibration of charged particles (atoms), blackbody, Kirchoff's law, Planck radiation law

- Room temperature objects: peaked at 10um

- Objects hotter than room temperature (30-1000°C): 2-15um, thermal imager