DESCRIPTION

· The SPCM-AQRH Single Photon Counting Module by Excelitas Technologies detects single photons within a wavelength range of 400nm to 1060nm, offering superior performance over other photon counters.
· Features a unique silicon avalanche photodiode with a circular active area, achieving over 70% peak photon detection efficiency at 650nm.
· Generates a TTL-level pulse for each detected photon, with a signal output via a BNC connector requiring 50 Ω termination.
· Includes thermoelectric cooling and temperature control for stable performance across an operating temperature range of 5˚C to 70˚C.
· Offers mounting options including free space window, FC fiber adaptor, C-mount, or tube cage mount bracket/adaptor.
· Enhanced electronic circuitry reduces minimum dead time to less than 25 ns, improving linearity and dynamic range.
· Internal protection circuitry safeguards against damage from ambient lighting overload.
· Fully compliant with the European Union’s RoHS Directive 2015/863/EU.

FEATURES

· Peak Photon Detection Efficiency (PDE): >70% at 650nm.
· Active area diameter: 180µm.
· Dynamic range: >35 Mcps.
· Gated output.
· Single +5V power supply.
· Low after-pulse probability.
· High uniformity across the active area.
· Unmatched linearity.
· Various mounting and interface options available.

APPLICATIONS

· LIDAR.
· Quantum Cryptography.
· Photon correlation spectroscopy.
· Astronomical observation.
· Optical range finding.
· Adaptive optics.
· Ultra-sensitive fluorescence.
· Particle sizing.
· Microscopy.