Laser Components announced that it has rolled out a new range of single-photon-counting modules that are mechanically compatible with other photon-counting modules. 
The COUNTblue units integrate the low count rates of the present modules with high detection efficacies at shorter wavelengths.
 COUNTblue Photon Counting Module
COUNTblue Photon Counting Module
The COUNTblue single-photon-counting modules detect over 50% of incoming photons in the red and 65% of incoming photons in the green. The module’s short-wavelength performance makes it ideal for various applications in confocal and lidar microscopy, astronomy, particle sizing, time-resolved single-molecule detection, and for fluorescence spectroscopy and analysis. The modules’ semiconductor design assures zero bi-stability and stable count rates.
The COUNTblue modules combine Laser Components’ VLok silicon avalanche photodiode with PicoQuant’s signal-processing and quenching electronics. The spectral range of the devices varies from 350 nm to 1000 nm. The incoming photons produce electrical pulses, which can be read at the transistor-transistor logic output. The modules have an optional FC connector that connects them to the sample through a multimode optical fiber.
The modules have an operating temperature between 10 and 40 °C. They also feature a timing resolution of 800 ps, an active area diameter of 100 µm, and a single 12 VDC supply operation.