Jan 2008Gentec-EO USA Inc.Request Info
Spectrum Detector Inc. has introduced spectrally flat pyroelectric joulemeters based on the wedge Trap concepts developed at the National Institute of Standards and Technology. The Trap consists of a large-area black pyroelectric detector opposite a large-area broadband mirror in a 15° wedge configuration that is designed so that 99% of the light passing through the 5-mm aperture is absorbed and measured. The spectral response from 0.25 to 13 μm is flat to 1% or better, and useful spectral range is from 0.2 to 1000 μm. Calibration uncertainty is <1%, and energy ranges from 100 nJ to 5 mJ. Available in analog and digital versions, the instruments have a modular design and interchangeable detectors.