Special photodiode sensor, Fast Photodetector Model FPS-1

The FPS-1 fast photodetector is a compact easy to use very fast photodetector with wide spectral response. It is used to measure the temporal pulse shape of laser pulses.It has two modes of operation: Into 50Ohm load for ns high peak power pulses and 10kOhm load for longer lower peak power pulses. In order to adjust the input intensity to the level appropriate for the detector, you may scatter the laser light off of a white matt surface and back off till the appropriate intensity is reached. Alternatively, or in addition, you may procure the ND attenuators listed below which may be stacked.