{
  "abstract": "We report on the diffraction-free propagation of space-time wave packets (STWPs) – a class of propagation-invariant pulsed beams—for ∼ 1 km in an open-air laser range in a low-turbulence scenario. Making use of ≈ 100 fs pulses (bandwidth ∼ 25 nm) at a wavelength of ≈ 1 μ m, we construct an STWP with a transverse width of ≈ 2 mm that expands to ≈ 3 mm after ∼ 500 m, and another that expands from ≈ 8 mm to ≈ 10 mm after 1 km. The propagation of the STWPs is compared with that of Gaussian wave packets of the same transverse spatial width and bandwidth. We establish a theoretical model that accounts for the key factors limiting the STWP propagation distance and suggests a path to further extending it.",
  "abstract_shown": true,
  "affiliations": [
    "University of Central Florida",
    "University of Utah"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Layton A. Hall",
      "orcid": "0000-0001-6820-9757"
    },
    {
      "affs": [
        0
      ],
      "name": "Miguel A. Romer"
    },
    {
      "affs": [
        0
      ],
      "name": "Bryan L. Turo",
      "orcid": "0000-0003-2513-4059"
    },
    {
      "affs": [
        1
      ],
      "name": "Tina M. Hayward",
      "orcid": "0009-0003-5862-7180"
    },
    {
      "affs": [
        1
      ],
      "name": "Rajesh Menon",
      "orcid": "0000-0002-4777-376X"
    },
    {
      "affs": [
        0
      ],
      "name": "Ayman F. Abouraddy",
      "orcid": "0000-0002-4987-5495"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cd8hcqgct0vtj.bib",
  "cited_by": 9,
  "doi": "10.1088/2040-8986/aeaa08",
  "fulltext_url": null,
  "id": "cd8hcqgct0vtj",
  "issns": [
    "0150-536X",
    "2040-8978",
    "2040-8986",
    "2056-7162"
  ],
  "landing_url": "https://doi.org/10.1088/2040-8986/aeaa08",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3107|Orbital Angular Momentum in Optics"
    ]
  ],
  "openalex": "W4297677890",
  "pdf_url": "https://iopscience.iop.org/article/10.1088/2040-8986/aeaa08/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": "IOP Publishing",
  "ris": "https://research.draconitic.com/paper/cd8hcqgct0vtj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:26:43Z",
      "native_id": "W4297677890",
      "source": "openalex",
      "url": "https://doi.org/10.1088/2040-8986/aeaa08"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Orbital Angular Momentum in Optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Space-time wave packets propagating a kilometer in air",
  "title_text": "Space-time wave packets propagating a kilometer in air",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T13:20:25Z",
  "url": "https://research.draconitic.com/paper/cd8hcqgct0vtj",
  "venue": "Journal of Optics",
  "versions": []
}