AUTOCORRELATOR OF LUMINOUS PULSES Russian patent published in 2002 - IPC

FIELD: measurement technology. SUBSTANCE: device has beam splitter, variable optical delay line, unit for superimposing light beams optically coupled to recording unit. The beam splitter, variable optical delay line, unit for superimposing light beams are designed as light-splitting cube having light-splitting layer spread along its diagonal. The input and output faces are flat and orthogonal relative to one another, the other two are designed so that the path length difference of different areas of wave front varies according to a definite, exactly known law and they have reflecting coating. Multi-element photodetector coincides and optically coupled with output cube face. EFFECT: stable operation characteristics. 5 cl, 6 dwg