FIELD: optics; nonlinear optics.
SUBSTANCE: method can be used for measuring field of ultra short light pulses. Two copies of tested pulses are created first. Copies are directed onto non-linear crystal, which provides simultaneous generation of radiation of second harmonic of one pulse and radiations of total frequency of both copies. Intensity distribution, arising at interference of tested pulse's second harmonic and of pulse total frequency are registered. Single-dimension distribution of intensity is measured and pulse field time dependence is determined by means of iteration algorithms which algorithms have visual zero approach, which gives the chance of watching pulse field in oscillograph mode at minimal load of computational system.
EFFECT: improved precision of measurement.
2 cl, 7 dwg
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