Single-shot frequency-resolved optical gating for retrieving the pulse shape of high energy picosecond pulses

R Aboushelbaya, A F Savin, L Ceurvorst, J Sadler, P A Norreys, A S Davies, D H Froula, A Boyle, M Galimberti, P Oliveira, B Parry, Y Katzir (+1 others)
2018 Review of Scientific Instruments  
Accurate characterization of laser pulses used in experiments is a crucial step to the analysis of their results. In this paper, a novel single-shot frequency-resolved optical gating (FROG) device is described, one that incorporates a dispersive element which allows it to fully characterize pulses up to 25 ps in duration with a 65 fs per pixel temporal resolution. A newly developed phase retrieval routine based on memetic algorithms is implemented and shown to circumvent the stagnation problem
more » ... stagnation problem that often occurs with traditional FROG analysis programs when they encounter a local minimum.
doi:10.1063/1.5044526 pmid:30399934 fatcat:zbhaon7pcrb4vjnmkgm6spjz7y