The available photon-counting detectors include photomultiplier tubes (PMT), Hybrid photomultiplier detectors (HPD) and Single Photon Avalanche Diodes (SPAD) that cover different spectral ranges between the UV and the NIR. All detectors feature timing resolutions in the picosecond range, depending on model and operating conditions.
The PDM series of photon counting detector modules are all solid-state instruments. They have a photon detection efficiency of 49% at 550nm and generate a TTL output pulse per detected photon. With the fast-timing option (additional circuit board installed), they provide better than 50ps FWHM photon timing resolution.
We also offer the SPAD PDM-IR to bridge the gap in the NIR infrared photon detection.