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Pyroelectric Detectors

Pyroelectric detectors are thermal detectors; i.e. they create an electric signal due to temperature changes in the chip. This temperature change is caused by absorption of light. We do use LiTaO3 and DLaTGS as pyroelectric materials. Basically such detectors cover the whole spectra. However, they are mainly used for mid-wave and long-wave infrared detection (MWIR and LWIR). In addition, the usage in the THz region seems to become more popular these days.

Pyroelectric DLaTGS Detectors

Multi channel pyroelectric detectors

Deuterated Lanthanum α Alanine doped TriGlycine Sulphate (DLaTGS) detectors exhibit the most effective pyroelectric effect known. Their major application is FTIR.

DLaTGS is used as the detector material when the highest possible performance is required. Although there are many other possible uses, their major application is FTIR.

Temperature-stabilized versions. TEC devices are also supplied in TO-99 and TO-37 packages: They are single-stage Peltier devices with a control thermistor. The purpose of these versions is to tune and maintain the detector in the operational sweet spot.

In applications with low modulation frequencies, thin-chip LTO detectors of the LT31 series offer high detectivity and a good signal-to-noise ratio. The material is extremely robust and temperature stable, so that the detectors can be used without additional cooling elements.

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Mark Mitchell
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News »
30.01.2024

Pyroelectric Detectors That Bridge the Benefits of LTO and DLaTGS

LASER COMPONENTS is thrilled t...