Pyroelectric detectors suitable for infrared spectrometers

Posted By : Enaie Azambuja
Pyroelectric detectors suitable for infrared spectrometers

LASER COMPONENTS is a manufacturer of Deuterated L-Alanine doped Triglycine Sulphate (DLaTGS) pyroelectric detectors for infrared spectrometers. From their research and production facility in Florida they supply customers all over the world with these industrial grade detectors. DLaTGS has several advantages over standard TGS, the material is doped with deuterium to raise the Currie temperature to 61ºC, while doping with L-alanine prevents permanent depoling after excursions above the Currie temperature.

These features make DLaTGS high performing pyroelectric materials available today. The devices are manufactured in standard TO style packages that can be fitted with a range of windows including CaF2, KBr, BaF2 and ZnSe-Ar.

Thermoelectric coolers can also be supplied in TO-99 and TO-37 packages. The TEC can be used to tune the detector temperature to maintain maximum responsivity. 

FTIR spectroscopy was developed to overcome the slow scanning limitations encountered with dispersive elements and so, the interferogram needs to be processed quickly. The broad spectral response and short time constant of DLaTGS makes it suitable for this application - the D31/D41 series of voltage mode devices are specifically designed for this application.

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