{
  "abstract": "We demonstrate a compact single-beam optically pumped magnetometer (OPM) employing a pure 87Rb microfabricated vapor cell with 500 Torr buffer gas. The residual magnetic field is actively minimized to below 400 pT through a combination of mu-metal magnetic shielding and internal compensation coils. We systematically characterize the OPM response as a function of laser detuning and optical intensity, and derive the magnetic-field sensitivity from the signal slope and noise amplitude spectral density. A best sensitivity of 11 fT/Hz^1/2 is achieved near the resonance transition at an optimal optical intensity, using a small cell volume of only 0.027 cm^3. Furthermore, a miniaturized OPM prototype was developed using a folded flexible printed circuit board (FPCB) to integrate the vapor cell, a compact heater, and magnetic-field coils into a cubic sensing head. Two coil configurations patterned directly on the FPCB were investigated. Under optimized operating conditions, the OPM prototype achieved a sensitivity of 66 fT/Hz^1/2. These results demonstrate that high-buffer-pressure single-beam OPMs can achieve excellent sensitivity, establishing a pathway toward compact and scalable arrays.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.32795",
  "author_total": 8,
  "authors": [
    {
      "name": "Jia-You Liou"
    },
    {
      "name": "Yi-Hsuan Chen"
    },
    {
      "name": "Hsiang-An Chuang"
    },
    {
      "name": "Chih-Hsuan Huang"
    },
    {
      "name": "Zong-Hsin Liu"
    },
    {
      "name": "I-Chiao Tsai"
    },
    {
      "name": "Kai-Hsin Peng"
    },
    {
      "name": "Yi-Hsin Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9gzcr6g10cgah.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.32795",
  "fulltext_url": null,
  "id": "9gzcr6g10cgah",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.32795",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.app-ph"
    ],
    [
      "arxiv",
      "physics.atom-ph"
    ],
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Atomic and Subatomic Physics Research"
    ]
  ],
  "openalex": "W7223698406",
  "pdf_url": "https://arxiv.org/pdf/2610.32795",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9gzcr6g10cgah.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.32795",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.32795"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "A Compact Single-Beam Optically Pumped Magnetometer Based on Absorption Detection",
  "title_text": "A Compact Single-Beam Optically Pumped Magnetometer Based on Absorption Detection",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/9gzcr6g10cgah",
  "venue": "arXiv",
  "versions": []
}