{
  "abstract": "We report on a narrow linewidth nanosecond pulse optical parametric amplifier (OPA) seeded by a tunable continuous wave (CW) laser diode emitting around 1647 nm with a high spectral contrast. The system is pumped by a 1030 nm fiber laser delivering an average power of 10 W, pulses with a duration of 10 ns at a repetition rate of 100 kHz. A maximum signal conversion efficiency of 21% is achieved, corresponding to 2.16 W of average power and 20 µJ pulse energy with a beam quality factor of M 2 < 1.25. Optical spectrum analysis shows a spectral purity > 99.97%, and optical heterodyne measurements demonstrate near Fourier transform-limited operation with a spectral linewidth < 110 MHz for 10 ns pulses. Methane absorption spectroscopy is demonstrated using a gas cell, confirming the narrow linewidth and spectral stability of the source. These results highlight the potential of CW-seeded OPAs as laser sources for gas-sensing LIDAR systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "Marie-Céline Gauthier Danve"
    },
    {
      "name": "Ricarda Wolf"
    },
    {
      "name": "Michele Natile"
    },
    {
      "name": "Yoann Zaouter"
    },
    {
      "name": "Marc Hanna"
    },
    {
      "name": "Patrick Georges"
    },
    {
      "name": "Xavier Délen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fx4x8ttj7067m.bib",
  "cited_by": 0,
  "doi": "10.1364/ol.606878",
  "fulltext_url": null,
  "id": "fx4x8ttj7067m",
  "issns": [
    "0146-9592",
    "1539-4794"
  ],
  "landing_url": "https://hal.science/hal-05760049v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.phys"
    ],
    [
      "hal",
      "2.phys.phys.phys-optics"
    ],
    [
      "openalex",
      "2208|Solid State Laser Technologies"
    ]
  ],
  "openalex": "W7165871433",
  "pdf_url": "https://hal.science/hal-05760049/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-23",
  "publisher": "Optical Society of America - OSA Publishing",
  "ris": "https://research.draconitic.com/paper/fx4x8ttj7067m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
      "native_id": "hal-05760049",
      "source": "hal",
      "url": "https://hal.science/hal-05760049v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "hal:2.phys.phys.phys-optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Fourier transform-limited, nanosecond, CW-seeded optical parametric amplifier with high spectral purity",
  "title_text": "Fourier transform-limited, nanosecond, CW-seeded optical parametric amplifier with high spectral purity",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:39Z",
  "url": "https://research.draconitic.com/paper/fx4x8ttj7067m",
  "venue": "Optics Letters",
  "versions": []
}