Pyro-electric laser energy sensor PEM series

The following range of pyroelectric sensor heads is suitable for direct connection to an oscilloscope or to the PEM 710 Power and Energy Meter. To give an improved signal size and to improve noise performance, pre-amplifiers can be used. Also available are special heads for high power applications and for VUV (157nm) F2 laser measurements. • Pyroelectric pulsed laser energy detectors with black absorption coating for high sensitivity - Series PEM • HiRep Laser energy detectors designed for high repetition rates - Series PEM HiRep • Pyroelectric pulsed laser energy detectors with ceramic absorption coating for high power densities - Series PEM K • Laser energy detector with integrated pre-amplifier - Series PEM E Pyroelectric sensors can be classified as thermal detectors. They provide wavelength independent conversion of light pulses into voltage pulses. These detectors are built using a coaxial design and are therefore extremely insensitive to electromagnetic interference (eg pulsed gas lasers). To satisfy the requirements of different applications, detectors are available with diameters of 4 to 50mm. It is advisable to choose a detector having a slightly larger area than the cross-section of the beam to be measured. The detectors have a black absorption coating which possesses uniform absorption over the wavelength range from 185nm to 25µm. The comparatively high sensitivity of these detectors is particularly useful. Due to the insensitivity to electromagnetic interference, it permits laser pulse measurements in the mJ range without any additional amplification.