In the photosensor field, photomultiplier tubes (or PMT) are known to have particularly high sensitivity. PMT also have dozens of other advantages such as high-speed response time.
The PMT module is basically comprised of a photomultiplier tube to convert light into electrical signals, a high-voltage power supply circuit, and a voltage divider circuit to distribute the optimum voltage to each dynode, all assembled into a single compact case. In addition to these basic PMT modules, Hamamatsu also provides modules having various additional functions such as signal processing, cooling and interface to PC.
Quantum cascade lasers are semiconductor lasers that offer peak emission in the mid-IR range (4 um to 10 um).
Detectors with sensitivity to wavelengths above 1 µm. Careful selection of material combinations allows offering a variety of types that cover a broad spectral range.
These products are a thermoelectrically cooled Si photodiode with preamp developed for low-light-level detection.