Pulse retrieval algorithm for interferometric frequency-resolved optical gating based on differential evolution

The Review of Scientific Instruments
Janne HyytiGünter Steinmeyer

Abstract

A novel algorithm for the ultrashort laser pulse characterization method of interferometric frequency-resolved optical gating (iFROG) is presented. Based on a genetic method, namely, differential evolution, the algorithm can exploit all available information of an iFROG measurement to retrieve the complex electric field of a pulse. The retrieval is subjected to a series of numerical tests to prove the robustness of the algorithm against experimental artifacts and noise. These tests show that the integrated error-correction mechanisms of the iFROG method can be successfully used to remove the effect from timing errors and spectrally varying efficiency in the detection. Moreover, the accuracy and noise resilience of the new algorithm are shown to outperform retrieval based on the generalized projections algorithm, which is widely used as the standard method in FROG retrieval. The differential evolution algorithm is further validated with experimental data, measured with unamplified three-cycle pulses from a mode-locked Ti:sapphire laser. Additionally introducing group delay dispersion in the beam path, the retrieval results show excellent agreement with independent measurements with a commercial pulse measurement device based on ...Continue Reading

References

May 24, 2005·Optics Letters·Ivan Amat-RoldánDavid Artigas
Nov 17, 2007·Optics Letters·Toshiyuki Hirayama, Mansoor Sheik-Bahae
Mar 22, 2004·Optics Express·Ivan Amat-RoldánDavid Artigas
Apr 4, 2005·Optics Express·Gero Stibenz, Günter Steinmeyer
Sep 2, 2011·Nano Letters·Samuel BerwegerMarkus B Raschke
Oct 18, 2016·Optics Letters·Po-Ya WuShang-Da Yang
Jun 2, 2017·Optics Letters·Janne HyytiTobias Witting

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Citations

Mar 15, 2020·Scientific Reports·Allan S JohnsonSimon Wall
May 15, 2021·Optics Express·Jacob StammMarcos Dantus

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