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Single photon counting modules with a detection efficiency >50% at 810 nm

COUNT® on us!

The COUNT® NIR is a single photon counting module for the NIR. It features an APD with enhanced detection efficiency around 810 nm. This wavelength plays an important role in quantum cryptography applications.

The outstanding performance is based on a proprietary APD design that was developed by the LASER COMPONENTS Detector Group out of Arizona. This is what gives LASER COMPONENTS the opportunity to take the technology to where their customers need it to be.


  • Extremely low dark count rates < 50 cps
  • Detection efficiency > 50% at 810 nm
  • Single 12 V DC supply operation
  • Stable count rate (no bi-stability)



Beyond Borders

LASER COMPONENTS Germany - Your competent partner for optical and optoelectronic components in Germany.

Welcome to LASER COMPONENTS Germany GmbH, your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, fiber optics, and more is worth every Euro (€/EUR). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:

Werner-von-Siemens-Str. 15
82140 Olching

Phone: +49 8142 2864-0
Email: info(at)

Team of experts
You have questions or need our support?
Please call us.
Dr. Olga Stroh-Vasenev
Sales Account Manager / Active Components
Dr. Olga Stroh-Vasenev
82140 Olching
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Laser Components

Werner-von-Siemens-Str. 15
82140 Olching

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