The COUNT photon counting modules from Laser Components (Hudson, NH) achieve quantum efficiency of over 70% in the red region for confocal microscopy and fluorescence analysis. The modules are based on a silicon Geiger-mode avalanche photodiode (APD) developed specifically for the series. Standard modules are available with dark-count rates ranging from 20 to 250 counts, and modules with <10 cps are available upon request. The modules feature an FC connection for optical fibers that have a core diameter up to 105 µm, or come as a free-beam module.
A New Benchmark in Photon Counting
Highest quantum efficiency and record-breaking dark count rates were the requirements for the photon counting modules produced in-house - and our developers met these expectations. Laser Components formed a strategic partnership with PicoQuant GmbH to develop photon counting modules of the highest quality.
The new COUNT photon counting modules achieve an unrivaled quantum efficiency of over 70% in the red region. Another advantage of these photon counters over modules currently available on the market is their significantly higher quantum efficiency in the blue spectral range.
The COUNT series is based on a silicon Geiger-mode APD developed specifically for this series. It is one of the lowest-noise APDs on the market. Together with electronics that has been optimized down to the smallest detail, this APD represents the heart of the COUNT module. Starting October 2010, standard modules are available with dark count rates ranging from 20 to 250 counts. Modules with <10 cps [counts per second] are available upon request.
These modules either come with an easy-to-use FC connection for optical fibers that have a core diameter of up to 105 µm or as a free-beam module. Thanks to its compact housing and plug & play compatibility with photon counters currently available on the market, replacing existing photon counters with the COUNT module is child’s play.
Counting photons? COUNT on LASER COMPONENTS.
Posted by Lee Mather
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