The single photon counting module (SPCM) has a photon detection efficiency of over 70 at 700 nm,It is a photon counter capable of measuring wavelength from 

400 nm to 1060 nm. 

This product is an integral 2-stage TE cooler, cooler controller, amplifier, discriminatorand includes a TTL output driver.

It also has a high-voltage DC-to-DC converter and the drive voltage is 5 volts

The module uses a patented active-quench circuit, which can count over 30 million photons per second.

The photosensitive area is 175um, and products with a dark-counter rate of less than 25 counts per second are also available

* Application

  - LIDAR

  - Particle sizing

  - Photon correlation spectroscopy

  - Astronomical observation

  - Optical range finding

  - Adaptive optics

  - Ultra-sensitive fluorescence

  - Particle sizing