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Broadband Radiometers

Photonics Spectra
Jun 2010
Gentec-EO USA Inc.Request Info
 
Spectrum Detector Inc.’s T.rad series broadband digital radiometers offer sensitivity in the far-IR and the 0.1- to 100-THz regions of the spectrum. The state-of-the-art, thin-film crystalline pyroelectric detector, digital electronics and lock-in amplifier software enable 50-nW measurement with 2-nW resolution. The radiometer probes are available with detector areas of 1.5, 5.0 and 9.0 mm in diameter. The detector and preamplifier are mounted in a metal housing that includes a thermal isolation enclosure that has an SM1 threaded front bezel that takes windows, optics and filters. The only parameters that users have to set are range, filter tau and batch size. The software includes strip chart, statistics, tuning and setup screens.


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GLOSSARY
amplifier
A device that enlarges and strengthens a signal's output without significantly distorting its original waveshape. There are amplifiers for acoustical, optical and electronic signals.
radiometer
A device used to measure the intensity of radiant energy.  
resolution
1. In optics, the ability of a lens system to reproduce the points, lines and surfaces in an object as separate entities in the image. 2. The minimum adjustment increment effectively achievable by a positioning mechanism. 3. In image processing, the accuracy with which brightness, spatial parameters and frame rate are divided into discrete levels.
spectrum
See optical spectrum; visible spectrum.
thin film
A thin layer of a substance deposited on an insulating base in a vacuum by a microelectronic process. Thin films are most commonly used for antireflection, achromatic beamsplitters, color filters, narrow passband filters, semitransparent mirrors, heat control filters, high reflectivity mirrors, polarizers and reflection filters.
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