Abstract
Pyroelectric infrared radiation detectors of triglycline sulfate (TGS), triglycine fluoberyllate (TGFB), lithium sulfate, strontium barium niobate (SBN), and polycrystalline TGS are compared for responsivity, noise, and detectivity as a function of temperature. TGS, which currently exhibits the highest responsivity and detectivity at ambient temperature from 0.01 Hz to at least 10 KHz, is still one order of magnitude away in detectivity from an ideal thermal detector. Under ambient operating or storage conditions between 35° and 60°C, TGFB is the choice over TBS. Some spectral data is also presented.