A MULTICHANNEL SYSTEM FOR MEASURING THE RADIATION ENERGY OF HIGH-POWER PULSED LASERS

A system for measuring the energy of high-power laser pulses with leng ths ranging from picoseconds to milliseconds is described, Measurement s can be performed for energies ranging from 0.02 to hundreds of milli joules. The system contains a set of pyroelectric radiation sensors po sitioned at different test points of the laser channel and a 8- or 16- channel plug-in ADC card inserted into the free slot of an IBM PC. The software ensures the visual monitoring of each measurement channel wi th subsequent prompt processing, including signal smoothing, subtracti on of the background level, search far the maximum, and multiplication by the calibration factor. The program also provides for measuring th e energy of directed (laser) and isotropic (from a point source) radia tion.