THz Detectors

Our sensors are pyroelectric-based and can thus be used very easily, and at room temperature. You can choose either a standalone head with on-board electronics or go with our T-Rad meter and a separate sensor. We also have small discrete terahertz detectors in TO5/TO8 packages.



  • Relative Measurements from 0.1 to 30 THz Broadband, room temperature operation, easier to use and less expensive than a Golay cell
  • Easy to Integrate Format TO5 and TO8 packages make the QS-THZ detectors small and easy to integrate in an existing system
  • Several Sensor Sizes Available Choice of 2 x 2 mm and 5 and 9 mm Ø
  • Calibrated at 0.63 µm QS-THZ detectors are calibrated at a single wavelength (0.63 µm) and include typical wavelength correction data from 0.25 to 440 µm. They are used for relative measurements outside that range
  • Test Box Available Can be used with our QS-I-TEST test box which provides mounting and power supply
  • Permanent IR Window Options Every model can be fitted with a permanent IR window to narrow the wavelength range:
    • S5/8: Sapphire (0.3 – 4.5 and 100 - 1000 µm)
    • Q5/8: Quartz (0.25 – 3.0 and 50 - 1000 µm)
    • Si5/8: Silicon (1.2 – 8.0 and 50 - 1000 µm)