Real-time reconstruction of high energy, ultrafast laser pulses using deep learning

Matthew Stanfield, Jordan Ott, Christopher Gardner, Nicholas F. Beier, Deano M. Farinella, Christopher A. Mancuso, Pierre Baldi, Franklin Dollar

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report a method for the phase reconstruction of an ultrashort laser pulse based on the deep learning of the nonlinear spectral changes induce by self-phase modulation. The neural networks were trained on simulated pulses with random initial phases and spectra, with pulse durations between 8.5 and 65 fs. The reconstruction is valid with moderate spectral resolution, and is robust to noise. The method was validated on experimental data produced from an ultrafast laser system, where near real-time phase reconstructions were performed. This method can be used in systems with known linear and nonlinear responses, even when the fluence is not known, making this method ideal for difficult to measure beams such as the high energy, large aperture beams produced in petawatt systems.

Original languageEnglish (US)
Article number5299
JournalScientific reports
Volume12
Issue number1
DOIs
StatePublished - Dec 2022
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by STROBE: A National Science Foundation Science & Technology Center under Grant No. DMR-1548924; This material is based upon work supported by the National Science Foundation under the CAREER program Grant No. PHY-1753165, and under grant number DGE-1633631.

Publisher Copyright:
© 2022, The Author(s).

Keywords

  • Deep Learning
  • Lasers
  • Light

PubMed: MeSH publication types

  • Journal Article
  • Research Support, U.S. Gov't, Non-P.H.S.

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