{
  "abstract": "Infrared spectroscopy is a widely used technique for molecular identification, yet its widespread deployment remains constrained by bulky instrumentation, cryogenic cooling requirements, and limited portability. Here we demonstrate broadband near- to short-wave infrared spectroscopy enabled by a silicon-compatible GeSn photodetector integrated into a compact digital micromirror device-based single-pixel architecture. By combining detector design with targeted optical reconfiguration and wavelength recalibration, we extend the operational range up to 2.4 micrometers while maintaining room-temperature, zero-bias photovoltaic operation. System-level benchmarking quantifies the intrinsic trade-off between spectral extension and detectivity in narrow-bandgap photodetection, yielding a specific detectivity of $1.12 \\times 10^{10}$ cm Hz$^{1/2}$ W$^{-1}$ at 1.55 micrometers with an extended wavelength cut-off. We validate the capabilities of the obtained spectrometer through selective identification of representative commodity plastics, demonstrating a lightweight, low-power, and mechanically robust platform for portable and autonomous deployment. Despite the expected increase in generation-limited noise, access to strong polymer combination bands beyond 1.7 micrometers allows enhanced material discrimination. This work establishes a pathway toward scalable distributed molecular sensing and broadens access to infrared spectroscopy for environmental monitoring, industrial process control, and community-level chemical detection.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.03284",
  "author_total": 6,
  "authors": [
    {
      "name": "A. Nomezine"
    },
    {
      "name": "G. Daligou"
    },
    {
      "name": "D. Vlassov"
    },
    {
      "name": "S. Assali"
    },
    {
      "name": "M. R. M. Atalla"
    },
    {
      "name": "O. Moutanabbir"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/arkmhb0q2hmaw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.03284",
  "fulltext_url": null,
  "id": "arkmhb0q2hmaw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.03284",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "2208|Advanced Semiconductor Detectors and Materials"
    ]
  ],
  "openalex": "W7208762968",
  "pdf_url": "https://arxiv.org/pdf/2609.03284",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/arkmhb0q2hmaw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:31Z",
      "native_id": "2609.03284",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.03284"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "A Silicon-Compatible Uncooled Compact Broadband Infrared Spectrometer",
  "title_text": "A Silicon-Compatible Uncooled Compact Broadband Infrared Spectrometer",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:31Z",
  "url": "https://research.draconitic.com/paper/arkmhb0q2hmaw",
  "venue": "arXiv",
  "versions": []
}