METHOD OF MEASURING SENSITIVITY OF PHOTON-TYPE LASER BEAM DETECTORS

摘要

1. The invention concerns a method of measurement of sensitivity of photon detectors of laser beam, consisting in lightening of active surface of uncooled photon detector of laser beam, measurement of strength of this beam by strength gauge, next measurement of amplitude value of output signal voltage of this detector by means of observation of this amplitude's oscillation on screen of sensitive oscilloscope and dividing amplitude value of output signal voltage by strength of laser beam, characterised in that active surface of uncooled photon detector (4) is lightened by modulated laser beam (PM) in form of rectangular wave, created in mechanical modulator (2) as a result of laser beam modulation (P) emitted by permanent operation laser CO2 (1), and from output signal (UFT/t/) of tested uncooled photon detector (4) is emitted amplitude value of voltage of photon component (UF/t/), whereas voltage sensitivity of this detector (4) is determined by dividing measured amplitude of voltage of photon component (UF/t/) of output signal (UFT/t/) by value of strength of modulated laser beam (PM).IMAGE