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  • Manufactured by Laser Components

PbS Detectors

PbS Detectors detect infrared radiation in the wavelength range between 1 µm and 3.3 µm.

PbS detectors offer high sensitivity at a low price. They are the perfect solution for large-area IR detectors.

PbS detectors exhibit a higher sensitivity than PbSe detectors, by more than one order of magnitude; however, the time constant is longer. The IV-VI semiconductor PbS is a photodetector that reacts to incident IR radiation and changes its electrical resistance.

These detectors are used especially when large-area detectors are required because they are significantly less expensive than comparable InGaAs detectors. The typical chip size of LASER COMPONENTS’ standard detectors is 2 mm x 2 mm. Other configurations are also available upon request.

Application Fields:

The fields of application are manifold, examples of which include:

  • Temperature sensors – pyrometers
  • Flame and spark detectors
  • Moisture sensors
  • Measurement of coatings and oil films

PB25/27/30 – LASER COMPONENTS’ PbS Detectors

The standard size of detector elements in our lead sulfide series is 2 mm x 2 mm. Other sizes, as well as elements with Peltier cooling, are also available upon request.

Compared to InGaAs detectors, PbS elements, especially large-area designs, are available at a lower price and are thus still relevant.

RoHS Information

RoHS Directives

Our IR Detectors

Panchromatic, photoconductive and thermal detectors

InGaAs PIN Photodiodes

Modern InGaAs PIN photodiodes are panchromatic and convert broadband light to photocurrents in the Visible-NIR range. Concretely speaking, this means a sensitivity range from 500 nm to 1700 nm for regular InGaAs and – in increments – up to 2600 nm for extended InGaAs.

 

PbS and PbSe Detectors

PbS is a standard Short-Wave Infrared (SWIR) semiconductor detector (1 - 3.3 µm) whereas PbSe is used in the Mid-Wave Infrared (MWIR) range (1 - 4.7 µm when uncooled; up to 5.2 µm when cooled). Our PbS and PbSe detectors are photoconductive; the detector resistance is reduced during illumination. The crystal structure is polycrystalline and is produced via chemical deposition. 

Pyroelectric IR Detectors

A pyroelectric IR detector is a thermal detector in that it responds to the change in heat (IR) absorbed on its surface. Thermal detectors are polychromatic with a very wide spectral bandwidth.

The nature of the pyroelectric effect is that in a highly-ordered crystal (or ceramic), a temperature change in the element causes its atoms to move slightly out of position. This rearranges its electrical charge, which is measured in the electrodes on its surface.

The pyroelectric effect is found in many materials.  The most commonly-used materials are deuterated lanthanum α alanine-doped triglycine sulfate (DLaTGS) and lithium tantalate (LTO).

Uwe Asmus
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Find the right detector with just a few clicks. Just select your specifications in the search mask and you get an instant overview of all the detectors that meet your requirements. This way you don’t have to tediously search through our extensive standard product range.

Did the search engine throw up several results or did it actually happen that we don't have a detector in our range to meet your requirements? No problem! Get in touch with your contact person. We will be happy to help you with your selection or work with you to develop a new detector that best suits your application.

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45 Detectors

*) Size: Diameter for round, side length for square detector surfaces
Component Designation
Datasheet
Wave­length
Size*
Package
Quantity requested
Produkt
PB45S10104S
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size1 mm PackageTO
PB45S20209S
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size2 mm PackageTO
PB45S50508M
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size5 mm PackageTO
PB45S60608M
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size6 mm PackageTO
PB50S1010T17M
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size1 mm PackageTO
PB50S2020T17M
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size2 mm PackageTO
PB50S3030T17M
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size3 mm PackageTO
PB50S1010T27L
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size1 mm PackageTO
PB50S2020T27L
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size2 mm PackageTO
PB50S2020T28L
Download datasheet Wave­lengthMWIR (~ 2.6-8.0 µm) Size2 mm PackageTO
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Employee of LASER COMPONENTS Germany GmbH Employee of LASER COMPONENTS Germany GmbH
Uwe Asmus
LASER COMPONENTS Germany GmbH

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Employee of LASER COMPONENTS Germany GmbH Uwe Asmus
Sales Account Manager / IR Components and Optical Filters
Uwe Asmus
LASER COMPONENTS Germany GmbH
82140 Olching
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Werner-von-Siemens-Str. 15
82140 Olching
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