The ES145C is a pyroelectric sensor that permits independent of the wavelength of the incidence radiation,
the direct transformation of a radiation energy pulse into a voltage pulse. The ES145C sensor head is built
strictly on a coaxial basis and is therefore extremely insensitive to interference from electromagnetic radiation
like from a pulsed gas laser.
The ES145C has an aperture diameter of 45mm, for best performance it is recommended to choose a sensor
with an area slightly larger than the beams cross section. The active sensor area is coated with a black
absorber layer which possesses an almost constant absorption in the wavelength range from 185 nm to 25
μm. An EPROM located in the BNC to DB9 mating adapter will store the spectral response calibration
parameter required to provide an accurate energy reading.
The ES145C housing includes a 8-32 threaded mounting hole to accommodate posts and post holders. For
electrical insulation of the sensor a metric and an imperial post adapter is included.
The ES145C can directly connect to an Oscilloscope with 1MΩ input resistance via the BNC connector. To
accommodate higher repetition rates, the load resistance can be reduced, a calibration value for a 100kΩ
resistor is given with the sensor certificate of calibration