Laser Components USA, Inc.
116 South River Road
Building C
Bedford, NH 03110
Phone: +1 603 821 7040


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Press Releases

We regularly update news editors and other interested parties with our news ticker. All newsworthy information at LASER COMPONENTS is available here first! You will find the press releases in chronological order below. If you are looking for press releases from a specific department, use the navigation bar on the side. We differentiate between general company news and news from the product groups: photodiodes, IR components, photon counters, lasers, measurement devices, fiber-optical components, optics, and laser accessories.

Five New Bandpass Filters for Pyroelectric Detectors


Set up Your Detector for Different Gas Measurements

LASER COMPONENTS introduces five new bandpass filters for pyroelectric detectors, increasing the number of standard filters available to an outstanding seventeen versions. The new filters include reference filters (B) and filters for the detection of CO2 (A), water vapor (M), methane (S), and alcohol (O), and are either mounted directly inside the fixed cap of the detector or available as a separate cap, which is then mounted to an existing pyroelectric detector.

A reference filter should not have any gas absorption. Filter B can be used when SO2 is part of the gas mixture (peak wavelength = 3.86 µm, Bandwidth at half-power point (FWHM) = 90 nm).

The CO2 filter A with an peak wavelength = 4.265 µm is the filter with the best possible signal and simple linearization (FWHM = 110 nm).

Water vapor is in almost every gas mixture, which often leads to a disturbing background noise. An attempt to measure this with a 2.94 µm filter, for example, lead to problems of cross-sensitivity with CO2. The M filter has proven more reliable in such practical applications: peak wavelength = 5.78 µm, FWHM = 180 nm.

Methane is primarily measured at 3.33 µm; however, this is not particularly specific. An excellent alternative is the S filter, which operates at a longer-wave band: peak wavelength = 7.91 µm, FWHM = 160 nm.

With the increased popularity of breath alcohol measurement, the new standard filter (peak wavelength = 9.50 µm, FWHM = 450 nm) has become beneficial.

Further product information:
Choice of Filters for Pyrelectric Detectors

Laser Components Pyro Group, Inc.


Contact Person:    Susan Wells
Address:    116 South River Road Building C
ZIP / City:    03110 Bedford, NH
Phone:    +1 603 821 7040
Fax:    +1 603 821 7041

Bandpass filters for pyroelectric detectors

NEW Filter Caps
New Bandpass Filters for Pyroelectric Detectors.pdf