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Count data sheet - .PDF file.

Laser Components has introduced the Count single-photon detector, which has the ability to count single photons from 400–1,000nm. The Count NIR has been introduced specifically for wavelengths in the near-infrared.

The detector has high detection efficiency at a low dark count rate similar to the company’s silicon-based single-photon avalanche diodes. When equipped with electronics, they become easy-to-use photon-counting modules.

To operate this module, TTL pulses can be used. For this purpose, the Count is equipped with a gating input. The power is connected using a 12V power supply.

The Count NIR was developed to meet the requirements of experiments in fundamental research where light quanta play a crucial role. Many experiments are conducted in the wavelength range around 810nm, for example, in quantum optics and quantum information.

Click on the link above to download the data sheet.

Key specifications

  • Detection efficiency of 60 per cent at 810nm
  • Maximum detection efficiency of almost 80 per cent at 700nm
  • Dark count rates of less than 50 photons per second are common

Laser Components

The Laser Components Group was formed in 1986 and is located at six locations in Germany, France, UK, Canada and USA, employing more than 120 people worldwide. In-house production accounts for approximately half its turnover, with partner suppliers accounting for all other business.

Laser Components manufactures and supplies components, OEM modules, sources, optics and detectors, spanning the UV to the FIR. 

Products include:  

  • Photodiodes, including avalanche photodiodes, position sensitive detectors and PIN diodes
  • IR components, including IR detectors, IR emitters and optical components for IR
  • Single photon-counting modules, including accessories and silicon avalanche photodiodes for photon counting
  • Lasers, including laser diodes, laser modules and emitters for telecommunication
  • Measurement devices, including amplifiers, laser power detectors, and measurement instruments
  • Fibre optics, including optical fibres, assembled fibres, active and passive components and accessories
  • Optics, including laser optics, optical filters, optomechanical components, optical components and polarisers
  • Laser accessories, including laser safety products and spare parts and accessories
  • E-beam (physical vapour deposition) ion-assisted deposition and sputtering coating capabilities to the standard catalogue or customer-specific specifications.  

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