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  • Photon Counting

Photonics Spectra
Oct 2010
Laser Components USA Inc.Request Info
Pairing with PicoQuant GmbH, Laser Components IG Inc. has developed a photon counting module that can achieve a quantum efficiency >70% in the red region, and a higher quantum efficiency in the blue spectral range. Based on a silicon Geiger-mode avalanche photodiode (APD), the Count series features one of the lowest-noise APDs on the market, according to the company. It is available with dark count rates ranging from 20 to 250 counts. Modules with <10 counts per second are also available upon request. They either come with an easy-to-use FC connection for optical fibers that have core diameters of up to 105 μm, or as a free-beam module. In addition, they feature compact housing and plug-and-play compatibility for ease of use.


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optical fiber
A thin filament of drawn or extruded glass or plastic having a central core and a cladding of lower index material to promote total internal reflection (TIR). It may be used singly to transmit pulsed optical signals (communications fiber) or in bundles to transmit light or images.  
Smallest amount into which the energy of a wave can be divided. The quantum is proportional to the frequency of the wave. See photon.
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