{
  "abstract": "Frequency conversion of ultrafast lasers is fundamentally constrained by the trade-off between pulse energy and repetition rate. Here, we demonstrate a frequency conversion mechanism in which molecular coherence accumulates across ultrafast pulse trains in gas-filled hollow-core fibers. Unlike conventional nonlinear interactions initiated by individual high-energy pulses, this mechanism relies on the collective buildup of coherent molecular oscillations driven by successive pulses. Using this approach, we achieve Raman frequency conversion at repetition rates up to 3 GHz with nanojoule pulse energies. The results demonstrate that accumulated molecular coherence can govern nonlinear frequency conversion, revealing a domain of light-matter interaction whose physical limits remain largely unexplored.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.11811",
  "author_total": 11,
  "authors": [
    {
      "name": "Yazhou Wang"
    },
    {
      "name": "Marcello Meneghetti"
    },
    {
      "name": "Ian Davidson"
    },
    {
      "name": "Timothy Bate"
    },
    {
      "name": "J. E. Antonio-Lopez"
    },
    {
      "name": "Qiang Fu"
    },
    {
      "name": "Jaroslaw Rzegocki"
    },
    {
      "name": "Gregory T. Jasion"
    },
    {
      "name": "Rodrigo Amezcua-Correa"
    },
    {
      "name": "Francesco Poletti"
    },
    {
      "name": "Christos Markos"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/496g83evs2cp2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.11811",
  "fulltext_url": null,
  "id": "496g83evs2cp2",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.11811",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Laser-Matter Interactions and Applications"
    ]
  ],
  "openalex": "W7164342382",
  "pdf_url": "https://arxiv.org/pdf/2606.11811",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/496g83evs2cp2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2606.11811",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.11811"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Multi-pulse accumulation of gas molecular coherence enables gigahertz ultrafast frequency conversion",
  "title_text": "Multi-pulse accumulation of gas molecular coherence enables gigahertz ultrafast frequency conversion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/496g83evs2cp2",
  "venue": "arXiv",
  "versions": []
}