id100 Single Photon Counter

id100 Single Photon Counter

id Quantique's id100 series offers compact and affordable single-photon counting modules with best-in-class timing resolution of 40ps and low dead time of 45ns.

Based on a reliable silicon avalanche photodiode sensitive in the visible spectral range, the id100 module is able to detect weak optical signals down to the single photon level and has excellent timing stability up to count rates of 20MHz.

The id100 is available in 2 free space versions with either a 20micron or 50micron diameter diode and also three fiber coupled versions coming with a standard FC/PC optical input. The modules are available in four dark count grades: educational, regular, standard and ultra-low noise, with the ultra-low noise version offering a dark count rate of less than 20Hz for id100-20 and 50Hz for id100-50, the other models offering betweem 100Hz and 1000Hz dark count rate.


  • 40ps timing resolution
  • 45ns dead-time
  • Dark count rate down to 20Hz
  • Spectral range 350-900nm
  • Available with free space or fiber coupling
  • Compact and easy to use



This product could be used for the following applications:

  • Confocal microscopy
  • Fluorescence
  • Luminescence Detection
  • Fluorescence correlation spectroscopy
  • Spectroscopy
  • Quantum Cryptography


This product is manufactured by id Quantique.

Back to Top

Back to Top