The PMA detector is a single photon sensitive, fully integrated, fast time response and low noise photon sensor from PicoQuant. The PMA integrates a fast photomultiplier tube (PMT), a high voltage power supply and a pre-amplifier. These devices are built in a gold plated iron housing to achieve the highest level of RF and magnetic shielding and protection against the interference with other devices. Various photocathodes can be incorporated to meet the users needs. They cover various spectral ranges from 185 to 850 nm.

The built in pre-amplifier is specially targeted at timing sensitive applications such as Time-Correlated Single Photon Counting (TCSPC) with fast photon detectors. It is based on the proven PAM 102 design. The PMA is available in a positive or negative polarity output to fit various timing electronics.

Besides the polarity there is also the choice between three different cathode versions: A blue sensitive, low dark count version covering the spectral range from 185 to 650 nm, the standard 185 to 820 nm photon counting tube and a extended red cathode covering 300 to 850 nm. The gold plated housing is available in two different versions. The standard design (as shown above) contains no safety shutter. An alternative PMA -M features mounting holes for Sciencetech 9030 monochromators. A security shutter is incorporated in this version which can be interlocked with e.g. a sample chamber lid.

Signal output for all models is a standard 50 Ohms SMA connector. The module only needs a 12 V DC supply line, which is included in the PMA-M versions.