Method and device for measuring the phase and amplitude of ultrashort light pulses

摘要

The e method of the invention consists of carrying out: a linear optical filtering of the signal for which it is desired to measure the amplitude of the pulses by means of an acoustic interaction between the optical signal and a colinear or quasi-colinear acoustic beam, mixing in a non-linear response electro-optical element of optical beams diffracted by the acoustic beam, followed by at least one detector for detecting the light intensity derived from the mixer, or at least one integration detection of the square of the optical intensity diffracted by the acoustic beam.