Interferometric reconstruction of the complex amplitude (IRCA) of femtosecond pulses

A novel femtosecond diagnostic technique based on interferometric reconstruction of the complex amplitude (IRCA) of the E-field is introduced. It employs same-scan acquisitions of the Michelson interferometer signal along with the fringe-resolved autocorrelation function (ACF). Fourier transform spectrometry is used to evaluate optical pulse spectrum. Once the pulse spectrum and ACF are known, the pulse E-field is calculated. Such approach greatly simplifies hardware, reduces its mechanical dimensions and costs.