DEVICE MEASURING DURATION OF SINGLE LIGHT PULSES

摘要

FIELD: measurement technology. SUBSTANCE: device measuring duration of single light pulses includes source of measured light pulse, optical delay line, registering unit 5 and additionally inserted threshold element 6 and pulse counter 7, all optically matched. Registering unit is fabricated in the form of photodetector and optical delay line in the form of bunch of light guides having different length with common entrance and exit apertures. Length of shortest light guide is chosen equal to L₁, where v is velocity of light in light guide; t₁ is unit chosen for measurement of duration of light pulse. Total number of light guides n= T/ t₁, where n is total number of light guides. T is maximal duration of measured pulse. Length of each following light guide is shosen equal to , where i is ordinal number of light guide; L_i is length of i-th light guide. EFFECT: expanded meaurement range with simultaneous simplification of manufacturing process and increased reliability of device. 2 dwg