THz Series High Sensitive

These types of pyroelectric detectors are optimized for application in THz region. The detectors are small, have a large active area and a short response time.

​The basic principle is the absorption of radiation pulses from a pulsed or per chopper modulated cw radiation source on the absorbing layer. In combination with a low-noise current amplifier it is possible to detect the power of the radiation source.

​The thin pyroelectrical material makes it heating stronger and faster. That leads to a higher sensitivity. It´s also possible to use these sensors at high repetition frequencys. These advantages are bound to the disadvantage of a higher microphony.

At very short pulses it is possible to use this detector in combination with a voltage amplifier (f.e. VPA) as an energy detector for µJ and mJ region.
All detectors are calibrated from PTB Germany at 1.40 THz in combination with a preamplifier (CPA). Other conditions on request.

Data

Aperture

10 mm

Working range

1 µW .. 1 mW
(depending on the amplifers band width)

Sensibility

ca. 1,5 µA/W

Rise time

10 µs

max. Chopper frequency

1  kHz

max. Power density

5 mW/cm²

thermal time constant

20 ms

Dimensions (Diameter x Length)

34 mm x 22 mm

Data

Aperture

20 mm

Working range

1 µW .. 5 mW
(depends on the amplifers band width)

Sensibility

ca. 0,5 µA/W

Rise time

100 µs

max. Chopper frequency

500 Hz

max. Power density

5 mW/cm²

Thermal time constant

20 ms

Dimensions (Diameter x Length)

40 mm x 26 mm