Back to products

ID230 Infrared Single-Photon Detector

Hybrid gated and free-running InGaAs/InP photon counter with extremely low dark count

  • Free-running & gated
  • 25% quantum efficiency
  • Low dark count rate <25 Hz
  • 50 ps timing resolution

Now available in both gated and free-running: the detector can guarantee operation under megahertz gating frequencies with a very low afterpulsing probability and a timing resolution lower than 100 ps.

Originally designed for the applications which require asynchronous photon detection, the ID230 series has been recently improved to operate in both gated and free-running mode. ID Quantique presents the ID230 infrared single-photon counter. A photon detector with best-in-class dark count rate at telecom wavelengths and adjustable quantum efficiency up to 25%.

This unique for single photon detection product based on InGaAs/InP avalanche photodiode working in Geiger mode provides fast avalanche quenching. That limits afterpulsing and allows you to run operations at reasonably short deadtimes which can be set between 2 us and 100 us. In addition, a new cooling system enabling to go down up to – 100 °C gives the infrared single photon detector ID230 the lowest dark count rate available at the market.

Low afterpulsing and dark count rate are combined with the best timing jitter and the highest quantum efficiency. The photon counting module can operate at detection probability levels of up to 25%.

The photon arrival time is reflected by a 100 ns LVTTL pulse what makes ease of combination of a photon detector with other electronic devices within your research.

Furthermore, the infrared single-photon counter ID230 has a simple USB interface allowing its users to set the efficiency, the temperature of the avalanche photodiode and the deadtime. Therefore, the features of the single-photon detector ID230 can be efficiently used in a number of applications such as Quantum Optics & Quantum Cryptography, Fiber Optics Measurement and other.


  • Adjustable detection probability  from 0 to 25%
  • Adjustable deadtime from 2 us to 100 us
  • Adjustable temperature from -50 °C to -100 °C
  • TTL Output (100 ns, SMA connector)
  • Remote control via USB
  • Quantum optics
  • Quantum cryptography
  • Singlet oxygen
  • Fiber optics measurement
  • Spectroscopy, Raman
  • Eye safe Lidar
  • Fluorescence lifetime
  • Photoluminescence
  • IC failure analysis