For ease of use and flexibility in laboratory, prototyping, and bench top situations, ET Enterprises offers a stand-alone, inverting, FET input transimpedance amplifier.
Photon counting is the fundamental method for extracting the maximum information from a weak light signal. Coupling an amplifier-descriminator to a photomultiplier achieves this.
CT2 Counter Timer
The CT2 counter timer module is suitable for counting all sources of TTL pulses including all ET Enterprises TTL photon-counting modules and TTL amplifier discriminators.
MCS-CT3 Multi-Channel Scaler
The MCS-CT3 multi-channel scaler is suitable for counting all sources of TTL pulses, especially the ET Enterprises AD8 amplifier/discriminator.
The ET Enterprises' range of fast photomultipliers has a focus electrode that can be biased negative with respect to the photocathode to cut off the photoelectron input to the multiplier section.