Amplitude swing ultrashort pulse characterization across visible to near-infrared.

Abstract

[EN]There is a growing interest in obtaining robust ultrashort temporal characterization techniques able to operate in different spectral ranges with different pulse bandwidths. Here we demonstrate that the recently introduced amplitude swing technique can measure ultrashort laser pulses in different spectral regions over more than one octave from the visible to near infrared spectral ranges, without significant modification in the technique. Moreover, we implement a new strategy for the amplitude swing retrievals using a differential evolution algorithm.