{
  "abstract": "We measured the emission spectra and current-voltage (IV) characteristics of commercial InGaAsP LEDs in a cryostat over a temperature range from 7 K to 300 K. At a constant operating current of 3.3 mA, the peak emission wavelength of the 1200 nm (1650 nm) LED decreased from 1202.3 +/- 0.5 nm (1665.5 +/- 0.6 nm) at 300 K to 1143.1 +/- 0.3 nm (1539.5 +/- 2.2 nm) at 7 K, demonstrating a strong temperature dependence. The cut-in voltage increased systematically with decreasing temperature, in agreement with conventional diode theory. To assess junction self-heating effects, we conducted pulsed IV measurements at different duty cycles. The extracted apparent series resistance showed a clear duty-cycle dependence, whereas the cut-in voltage remained unchanged within experimental uncertainty, indicating that self-heating primarily influenced the IV slope rather than the cut-in voltage. These results quantitatively characterize the thermal behavior of both the spectral peak and key electrical parameters, supporting the application of InGaAsP LEDs as cryogenic calibration light sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.01776",
  "author_total": 7,
  "authors": [
    {
      "name": "Muad Ghaith"
    },
    {
      "name": "Wolfgang Rau"
    },
    {
      "name": "Philippe Di Stefano"
    },
    {
      "name": "Matthew Peterson-Galema"
    },
    {
      "name": "Eleanor Fascione"
    },
    {
      "name": "Richard Germond"
    },
    {
      "name": "Ryan Underwood"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/55pfaszdwjm98.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.01776",
  "fulltext_url": null,
  "id": "55pfaszdwjm98",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.01776",
  "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",
      "hep-ex"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.01776",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/55pfaszdwjm98.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.01776",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.01776"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Cryogenic Optoelectronic Characterization of InGaAsP LEDs for Low-Energy Detector Calibration",
  "title_text": "Cryogenic Optoelectronic Characterization of InGaAsP LEDs for Low-Energy Detector Calibration",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/55pfaszdwjm98",
  "venue": "arXiv",
  "versions": []
}