These sensors are optimised for use in the THz range. They are compact, have a large
active area and a short response time.

The basic principle is the absorption of radiation pulses from a pulsed or chopper-modulated cw radiation source on an absorption layer.

The combination with a low-noise current amplifier enables the power of the radiation
source to be measured.

For very short signals, it is also possible to use these sensors in combination with a
voltage amplifier (e.g. VPA) as energy sensors in the µJ and mJ range.


All sensors are calibrated by PTB Germany using a preamplifier at a wavelength of 1.4
THz. Other wavelengths are available on request.