Method of measuring nonlinearity spatial profiles of samples and temporal profiles of optical pulses

摘要

A method of determining a temporal waveform of a pulse, the method comprising: obtaining a Fourier transform magnitude of the temporal waveform of the pulse; obtaining a Fourier transform magnitude of a reference temporal waveform of a reference pulse, obtaining a Fourier transform magnitude of a first composite temporal waveform of a first composite pulse comprising the pulse followed by the reference pulse; obtaining a Fourier transform magnitude of a second composite temporal waveform of a second composite pulse comprising the pulse followed by a time-reversed pulse having a time-reversed temporal waveform corresponding to the reference temporal waveform after being time-reversed; and calculating the temporal waveform using the Fourier transform magnitude of the temporal waveform, the Fourier transform magnitude of the reference temporal waveform, the Fourier transform magnitude of the first composite temporal waveform, and the Fourier transform magnitude of the second composite temporal waveform.