{
  "abstract": "High numerical-aperture (NA) focusing of cylindrical vector beams (CVBs) typically requires costly, high-quality lasers to supply a stable vector pupil field. Here, we introduce fiber-conditioned vectorial nanofocusing, in which an optical-fiber-based mode-selective coupler projects a strongly distorted beam of a diode that costs two orders of magnitude less than the reference laser into radially or azimuthally polarized CVBs. A three-tolerance analysis clarifies its operating principle by establishing separate requirements for spatial state, temporal coherence and residual wavefront error. The resulting fields reproduce expected high-NA focal signatures and generate orientation-sensitive single-molecule excitation patterns consistent with reference-laser measurements, lowering the barrier to structured-light experiments.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.04924",
  "author_total": 11,
  "authors": [
    {
      "name": "Kaifa Xin"
    },
    {
      "name": "Mengdie Hou"
    },
    {
      "name": "Ao Yang"
    },
    {
      "name": "Márton Gelléri"
    },
    {
      "name": "Hyun-Keun Lee"
    },
    {
      "name": "Antonio Virgilio Failla"
    },
    {
      "name": "Jiafeng Lu"
    },
    {
      "name": "Xianglong Zeng"
    },
    {
      "name": "Mischa Bonn"
    },
    {
      "name": "Jesper Lægsgaard"
    },
    {
      "name": "Xiaomin Liu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/75z09rmmxp9de.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.04924",
  "fulltext_url": null,
  "id": "75z09rmmxp9de",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.04924",
  "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|Orbital Angular Momentum in Optics"
    ]
  ],
  "openalex": "W7211905966",
  "pdf_url": "https://arxiv.org/pdf/2609.04924",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/75z09rmmxp9de.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:14Z",
      "native_id": "2609.04924",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.04924"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Relaxing Coherence Requirements on Laser Sources for Nanoscopy through Optical Fiber Technique",
  "title_text": "Relaxing Coherence Requirements on Laser Sources for Nanoscopy through Optical Fiber Technique",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:14Z",
  "url": "https://research.draconitic.com/paper/75z09rmmxp9de",
  "venue": "arXiv",
  "versions": []
}