{
  "abstract": "We report the femtosecond laser inscription of mid-infrared waveguides in Pr³⁺-doped chalcogenide glasses with composition 90[0.8(GeS₂) − 0.2(Ga₂S₃)] − 10[CsCl]. These glasses feature low phonon energies, high rare-earth solubility, and broad transparency, although impurity absorption emerges at higher doping levels. Pr³⁺ ions in the glass feature broadband luminescence spanning 3.5–5.5 µm. Three hexagonal-cladding waveguides (27 µm diameter) with varying channel separations were fabricated in a longitudinal writing geometry and characterized using µ-Raman and µ-luminescence spectroscopy, Nomarski microscopy, and confocal profilometry. The study revealed densification in the laser-modified regions and an anisotropic stress field surrounding the waveguides. The waveguides exhibited low propagation losses (<1 dB/cm) with no significant additional loss from Pr³⁺ doping, highlighting their potential for mid-infrared sensing and integrated photonic devices.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "name": "Mariel Ledesma Molinero"
    },
    {
      "name": "Ngoc Quynh Hoa Nguyen"
    },
    {
      "name": "Pavel Loiko"
    },
    {
      "name": "Patrice Camy"
    },
    {
      "name": "Alain Braud"
    },
    {
      "name": "Pascal Masselin"
    },
    {
      "name": "Catherine Boussard-Pledel"
    },
    {
      "name": "David Le Coq"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/432n47805b5jt.bib",
  "cited_by": 2,
  "doi": "10.1364/ome.592158",
  "fulltext_url": null,
  "id": "432n47805b5jt",
  "issns": [
    "2159-3930",
    "2159-3930"
  ],
  "landing_url": "https://hal.science/hal-05767843v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2206|Laser Material Processing Techniques"
    ]
  ],
  "openalex": "W7154505416",
  "pdf_url": "https://hal.science/hal-05767843/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-30",
  "publisher": "OSA pub",
  "ris": "https://research.draconitic.com/paper/432n47805b5jt.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "hal-05767843",
      "source": "hal",
      "url": "https://hal.science/hal-05767843v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:0.chim",
      "subfield": "general"
    }
  ],
  "title": "Ultrafast laser inscription of mid-infrared waveguides in Pr3+-doped sulfide glass",
  "title_text": "Ultrafast laser inscription of mid-infrared waveguides in Pr3+-doped sulfide glass",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/432n47805b5jt",
  "venue": "Optical Materials Express",
  "versions": []
}