FIELD: physics.
SUBSTANCE: method for analyzing the spectral-temporal evolution of radiation includes obtaining an optical heterodyne signal, measuring the signal intensity, obtaining an analytic waveform by means of a Hilbert complement. Autocorrelation function is then calculated by the fast Fourier technique, the periodicity of the basic structure in the input radiation is determined, the input signal is recorded, synchronizing with the period of the basic radiation structure. Choice of the optimal core of the Cohen-class transformation for the signal under investigation is made and a two-dimensional spectral-time diagram is made. Method is based on the use of optical heterodyning to shift the analyzed radiation into the radio frequency area.
EFFECT: technical result of the claimed solution is an increase in the time resolution of the signal during the investigation of laser systems.
1 cl, 4 dwg
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