DESCRIPTION

· The SPCM-AQRH Single Photon Counting Module by Excelitas Technologies detects single photons from 400nm to 1060nm with superior performance.
· Features a unique silicon avalanche photodiode with a 180µm diameter active area, achieving over 70% photon detection efficiency at 650nm.
· Generates a TTL-level pulse for each detected photon, available at the BNC connector.
· Includes thermoelectric cooling and temperature control for stable performance across a 5˚C to 70˚C operating range.
· Offers options for free space window, FC fiber adaptor, C-mount, or tube cage mount bracket.
· Enhanced with reduced dead time to less than 25 ns, improving linearity and dynamic range.
· Equipped with internal protection circuitry against ambient lighting overload.
· Compliant with the European Union’s RoHS Directive 2015/863/EU.

FEATURES

· Peak Photon Detection Efficiency (PDE): >70% at 650nm.
· Active area of 180µm with high uniformity.
· Dynamic range exceeding 35 Mcps.
· Gated output and single +5V supply.
· Low after-pulse probability and unmatched linearity.
· RoHS-compliant design.
· Multiple mounting options including free space window, FC fiber adaptor, C-mount, and tube cage mount brackets.

APPLICATIONS

· LIDAR and optical range finding.
· Quantum cryptography and photon correlation spectroscopy.
· Astronomical observation and adaptive optics.
· Ultra-sensitive fluorescence and particle sizing.
· Microscopy and other high-precision optical applications.