News | June 14, 2017

Pyroelectric Detectors With A Differential Amplifier

Source: Laser Components USA, Inc.
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Pyroelectric Detectors With A Differential Amplifier

Signal-to-Noise Ratio Significantly Increased 
 
Bedford, NH: LASER COMPONENTS introduces a new and improved pyroelectric detector, the LD2100 series, with differential outputs.
 
Pyroelectric crystals simultaneously generate positive and negative charges on opposite faces, and our LD2100 detectors exploit this with a new amplification scheme.
 
The LD2100 series is based on our best-selling L2100 series CM current mode detector, and we plan to bring other differential versions of our detectors to market in due course.
 
The R&D team at LASER COMPONENTS Pyro Group reached deep into their bag of tricks to produce a pyroelectric detector that not only gives you double the signal compared to a single ended detector when used with a differential amplifier, but the noise only increases
by √2. This produces an improvement in signal to noise ratio of around 1.4.
 
Pyroelectric detectors with a differential amplifier have two additional advantages: External interference signals are eliminated by signal subtraction. Thus, they can be used in critical environments with electric fields. Furthermore, the LD2100 series makes simple wiring
possible, with which the signal outputs are connected directly to the inputs of the differential AD converter.
 
Pyroelectric detectors are used in NDIR and FTIR spectroscopy, IR laser-based measurement technology, pyrometry, and in flame and fire detection: The components are inexpensive, reliable, robust, and are highly sensitive from short to long IR wavelengths as thermal detectors.
 
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The Company
 
LASER COMPONENTS USA – part of the LASER COMPONENTS GROUP – specializes in sales, distribution and marketing of components in the laser and optoelectronics industry. We have been serving customers over 15 years in North America with products from our manufacturing sites in Germany, Canada and the US, as well as from well-selected international suppliers.
 
We serve a wide variety of photonics applications with avalanche photodiodes and modules (Si and InGaAs), IR detectors (InGaAs, PbS, PbSe, pyroelectric), photon counting modules, laser diodes and modules (at different wavelengths and power), pulsed laser diodes (905 and 1550 nm), laser diode drivers, laser optics (standard or custom dielectric coated) and polarizers.
 
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SOURCE: Laser Components USA