Lead salt infrared detectors uncovered
LASER COMPONENTS is a manufacturer of lead salt infrared detectors. They supply customers all over the world with these industrial grade thermal detectors from their research and production facility in Arizona. These detectors work on the principle that photons incident on the polycrystalline thin film promote electrons across the bandgap increasing the conductivity of the material, in turn decreasing the resistance of the substance.
The polycrystalline lead sulphide (PbS) units detect radiation in the wavelength range between 1 and 3.3μ and exhibit a higher sensitivity than polycrystalline lead selenide (PbSe) which can detect radiation between 1 and 5.2μ.
The devices are manufactured in standard TO style packages and have long expected lifetimes making them suitable for fit and forget applications such as gas sensing, surface inspection and flame detection.
The PB30 device is a collection of uncooled polycrystalline biased single element PbS detectors that operate at room temperature with a 20% cut off at 3.4μ and a maximum element size of 6 x 6mm2.
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