{
  "abstract": "We present an analytical stability analysis of the laser hosing instability in a parabolic channel in the weakly relativistic regime. We employ a variational principle approach to derive a set of coupled equations describing laser dynamics in a transversely inhomogeneous plasma. The quadratic Lagrangian formalism is applied to perform a stability analysis and to derive the growth rates for hosing in both long- and short-wavelength regimes. We find that a parabolic channel suppresses the long-wavelength hosing mode completely, for any channel depth, and that the unstable band of the short-wavelength mode is bounded below by a cutoff wavenumber set by the ratio of the channel frequency to the hosing coupling. A steeper channel narrows the unstable band and lowers the short-wavelength growth rate, but cannot stabilize the mode, since the dispersion relation forbids damping identically. The analysis is accompanied by two-dimensional particle-in-cell simulations, which reproduce the prediction in the nonlinear regime: the long-wavelength mode is absent in a channel, the surviving modulation shortens as the channel steepens, and its amplitude falls with channel depth. Further, our simulation results demonstrate the sensitivity of off-axis laser propagation to the plasma channel and distinguish the hosing instability from laser oscillations due to off-axis laser propagation in a plasma channel.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.07475",
  "author_total": 2,
  "authors": [
    {
      "name": "Yash M Jogiya"
    },
    {
      "name": "Vishwa Bandhu Pathak"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fsv4918eqv0wz.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.07475",
  "fulltext_url": null,
  "id": "fsv4918eqv0wz",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.07475",
  "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.plasm-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.07475",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fsv4918eqv0wz.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T18:21:30Z",
      "native_id": "2611.07475",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.07475"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Suppression of the Laser Hosing Instability in a Parabolic Plasma Channel",
  "title_text": "Suppression of the Laser Hosing Instability in a Parabolic Plasma Channel",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:41Z",
  "url": "https://research.draconitic.com/paper/fsv4918eqv0wz",
  "venue": "arXiv",
  "versions": []
}