Present Status of the Applications of Pyroelectricity to the Detection of Far-Lnlrared Radiations

The best defectivity at room temperature is obtained with a TGS single-crystal plate 10 mu m thick: D*(47/spl deg/C) = 6xl0/sup 8/ W/sup -1/ Hz/sup 1/2/ cm. It is shown that epitaxial layers can give as good or better detectivities.