 Benchtop Photon Counter operates in near-infrared spectrum.Sensors Unlimited, Inc. (SUI)
Princeton, NJ 08540
Nov 09, 2006
Measuring 19 x 5.25 x 12 in., Model SU-02-SPC provides single-photon counting in near-infrared spectrum from 0.9-1.6 microns. It incorporates circuits for discrimination of avalanche photodiode output pulses at very low current levels, as well as active quenching circuitry with response time under 10 ns. Users can control gate duration, repetition rate, detection probability, and dead time. Applications include semiconductor failure analysis, Raman spectroscopy, PDT dosimetry, and OTDR.
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 Photon Counter works at speeds up to 500 MHz.Advanced Research Instruments Corp.
Boulder, CO 80301 1232
Nov 27, 2001 Dual precision PRM-400 Ratemeter/Photon Counter accepts TTL, NIM and ECL inputs, produces bar graph display on LCD, and has parallel, serial and GPIB interfaces. It counts every pulse without prescaling, has 10 µsec time base, and uses dual counter for background subtraction. Dual alternating counters provide zero dead time. It has large FIFO data storage and 40-bit deep counters. Applications include surface analysis and spectrometry.
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