{
  "abstract": "Mesospheric sodium magnetometry with a laser guide star measures the geomagnetic field near 90~km. Its sensitivity hinges on laser linewidth and chirp, yet prior work optimized these two parameters only separately. We use velocity-resolved density-matrix simulations of Larmor-synchronous pulsed Na D$_2$ pumping to scan both parameters jointly. Linewidth and chirp exhibit a synergy: when chirping carries the recoil-mitigation role, the return flux stays within 1\\% of its peak across linewidths of 2--10~MHz. The flux-optimal chirp is $0.19~\\mathrm{MHz/\\upmu s}$, one fifth of the continuous-wave rate; this synergy guides high-sensitivity mesospheric magnetometer design.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.28466",
  "author_total": 4,
  "authors": [
    {
      "name": "Yucheng Yang"
    },
    {
      "name": "Chunyang Lei"
    },
    {
      "name": "Kai Guo"
    },
    {
      "name": "Shuai Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1p2983amwnrdx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.28466",
  "fulltext_url": null,
  "id": "1p2983amwnrdx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.28466",
  "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.app-ph"
    ],
    [
      "openalex",
      "3107|Atomic and Subatomic Physics Research"
    ]
  ],
  "openalex": "W7204751529",
  "pdf_url": "https://arxiv.org/pdf/2608.28466",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1p2983amwnrdx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2608.28466",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.28466"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Synergy between laser linewidth and frequency chirp in mesospheric magnetometry based on the sodium laser guide star",
  "title_text": "Synergy between laser linewidth and frequency chirp in mesospheric magnetometry based on the sodium laser guide star",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/1p2983amwnrdx",
  "venue": "arXiv",
  "versions": []
}