Enhanced dynamic range spatio-spectral metrology of few-cycle laser pulses

Accurate spatio-temporal and spatio-spectral metrology is critical to the characterization and use of ultra-short, highpower lasers.The emergence of few cycle pulses, with bandwidths of tens or hundreds of nanometers, poses a significant challenge to existing metrology techniques.This is due to a combination of large discrepancies in sensor sensitivity and significant variations in the pulse's spectral intensity at those wavelengths.In this paper, the authors propose spectral filtering and stitching of the measurements as a robust, simple solution that enhances the dynamic range of the measurements, allowing accurate few-cycle pulse reconstruction.This enhancement is demonstrated using INSIGHT -the most commonly used spatio-spectral measurement device -as well as using IMPALA and spatially resolved Fourier transform spectrometry.

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Publication Details

Journal
High Power Laser Science and Engineering
Published
2026-08-03
DOI
https://doi.org/10.1017/hpl.2026.10179
Primary Topic
Laser-Matter Interactions and Applications
Type
article
Field-Weighted Citation Impact
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article

Enhanced dynamic range spatio-spectral metrology of few-cycle laser pulses

F. D'Souza, Erik Löfquist, Anda-Maria Talpoşi, Cornelia Gustafsson et al.
High Power Laser Science and Engineering
Laser-Matter Interactions and Applications
article

Enhanced dynamic range spatio-spectral metrology of few-cycle laser pulses

F. D'Souza, Erik Löfquist, Anda-Maria Talpoşi, Cornelia Gustafsson, Ann-Kathrin Raab, D. Ursescu, Andrew H. Okukura, Alice Dumitru, Aaron Liberman, O. Lundh, Cristian Alexe, Andrea Angella, Saga Westerberg, Cord Arnold, Anders Persson, Victor Malka, Chen Guo
article en

Abstract

Accurate spatio-temporal and spatio-spectral metrology is critical to the characterization and use of ultra-short, highpower lasers.The emergence of few cycle pulses, with bandwidths of tens or hundreds of nanometers, poses a significant challenge to existing metrology techniques.This is due to a combination of large discrepancies in sensor sensitivity and significant variations in the pulse's spectral intensity at those wavelengths.In this paper, the authors propose spectral filtering and stitching of the measurements as a robust, simple solution that enhances the dynamic range of the measurements, allowing accurate few-cycle pulse reconstruction.This enhancement is demonstrated using INSIGHT -the most commonly used spatio-spectral measurement device -as well as using IMPALA and spatially resolved Fourier transform spectrometry.

High Power Laser Science and Engineering
University of Science and Technology (YE), University of Bucharest (RO), Lund University (SE), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), Weizmann Institute of Science (IL), Universitatea Națională de Știință și Tehnologie Politehnica București (RO)
Openalex Percentile: Top 11%
Laser-Matter Interactions and Applications
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