method and device for measuring the spektralphase or the combination of spektralphase and spatial phase of ultrashort light pulses

摘要

The method and device for measuring the spectral phase or phases spectral and spatial combined of ultrashort light pulses are to be carried out: - a decomposition (s) of the light pulse (ii) to be measured in two replicas are referred to respectively as a pulse signal (is) and a reference pulse primary (irp), of polarization or of different directions and whose characteristics are essentially identical to that of the pulse of origin (ii), - a temporal filtering (dmnl) of the reference pulse primary (irp) by a non-linear interaction generating a reference pulse secondary (irs) of the mean frequency is essentially identical and of the spectral width greater than the spectral width of the reference pulse primary (irp), - a measurement interferometer of the spectrum (spec) by recombination (r) of this reference pulse secondary (irs) and of the pulse signal (is) with a time offset given.