{
  "abstract": "We present BRAHMS, a cross-platform (Linux/Windows) graphical user interface, with GPU (CUDA) and CPU (OpenMP) backends, for the efficient and accurate simulation of three-wave mixing processes involving focused and pulsed Gaussian beams. The package solves the coupled $χ^{(2)}$ nonlinear Schrödinger equations, including diffraction, dispersion, walk-off, and phase-mismatch effects simultaneously, in full (3+1)D. To our knowledge, this is the first open-source package that solves the complete second-order (three-wave-mixing) nonlinear-optics problem in (3+1)D while fully exploiting the parallel capabilities of modern GPUs, with an equivalent CPU backend available for users without GPU hardware. The GPU implementation is inherently scalable thanks to its Thrust-based design. The package provides a valuable tool for experimental design and for studying three-dimensional field propagation in nonlinear three-wave interactions, supporting applications such as second-harmonic generation (SHG), sum-frequency generation (SFG), and optical parametric generation (OPG). Its GUI requires no programming experience, so that users can readily set up simulations and interpret their results.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.08384",
  "author_total": 2,
  "authors": [
    {
      "name": "Alfredo Daniel Sanchez Rossi"
    },
    {
      "name": "Daniel Alejandro La Valle Huignard"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6jrxynekrf5t4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.08384",
  "fulltext_url": null,
  "id": "6jrxynekrf5t4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.08384",
  "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.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.08384",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6jrxynekrf5t4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:49Z",
      "native_id": "2609.08384",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.08384"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "BRAHMS: A cross-platform graphical toolkit for (3+1)D simulation of three-wave mixing in $χ^{(2)}$ nonlinear media, with GPU and CPU backends",
  "title_text": "BRAHMS: A cross-platform graphical toolkit for (3+1)D simulation of three-wave mixing in χ^(2) nonlinear media, with GPU and CPU backends",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:49Z",
  "url": "https://research.draconitic.com/paper/6jrxynekrf5t4",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.cpc.2026.110399",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}