DOE OSTI · 3027828
Exploring high-intensity laser-driven secondary sources via high-order spectral pulse shaping for high-energy-density experiments
Abstract
We present here the results of an investigation that aims to explore the impact of spectral pulse shaping on the generation of high-energy electrons (>1 MeV) and x rays (∼5–9 keV) using a high-intensity (I∼10 21 W/cm 2 ) laser system. The study involved a systematic scan of a broad parameter space in group delay dispersion and third-order dispersion, with variations up to 4 × 10 3 fs −2 and 6 × 10 4 fs −3 , respectively, to identify optimal conditions for enhancing secondary source yields. Several spectral phase conditions were found to significantly enhance the generation of hot electrons and x rays by amounts reaching up to 50% relative to the transform-limited pulse. The experiment, conducted at the Scarlet laser facility (800 nm, 5 J, 30 fs) at the Ohio State University, highlights the potential of spectral pulse shaping as a powerful tool for tuning secondary laser-driven sources. These findings are particularly relevant for advancing brighter x-ray and electron probes for high-energy-density science.
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Zeraouli, Ghassan [Colorado State Univ., Fort Collins, CO (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000297946075), Mariscal, Derek A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000195024205), Grace, E. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:000000034564972X), Swanson, K. K. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000261640816), Djordjevic, B. Z. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000266774813), Hill, M. P. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000203070624), Jiang, S. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000203813846), Daskalova, R. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000564644256), Tiscareno, G. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000946175184), Hanggi, D. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000174659313), Spingola, P. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000890245461), Unzicker, B. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000628891900), Kuz, C. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0009000220071968), Chowdhury, E. [The Ohio State Univ., Columbus, OH (United States)], Schumacher, D. W. [The Ohio State Univ., Columbus, OH (United States)] (ORCID:0000000221713902), Rocca, J. J. [Colorado State Univ., Fort Collins, CO (United States)], Ma, T. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000266579604). 2026-02-19. Exploring high-intensity laser-driven secondary sources via high-order spectral pulse shaping for high-energy-density experiments. https://doi.org/10.1063/5.0308243
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