{
  "abstract": "Time-domain ultrafast and nonlinear terahertz spectroscopy techniques are recently applied to many condensed matter systems for investigating their collective excitations. In centrosymmetric systems, these collective modes are typically Raman-active and therefore do not couple directly to the terahertz electric field. The mechanism by which light-matter interaction realizes in these studies has not been explicitly discussed in detail. In this work, we perform terahertz pump - optical probe and terahertz third harmonic generation investigations on 1T-TaS2, a material exhibiting a rich charge-density-wave (CDW) phase diagram including the commensurate, nearly-commensurate and incommensurate CDW phases. The transition between these distinct states leaves a clear signature on the dynamical Raman response. We investigate how the Raman-active phonons couple to a broadband monocycle terahertz field as well as a narrowband multicycle terahertz field. Our results indicate that a modified impulsively stimulated Raman scattering mechanism involving two-photon absorption, also known as non-resonant Raman scattering, underlies the coherent excitation and observation of the lattice modes. These results are relevant for future spectroscopy investigation and coherent control of collective modes using low-energy terahertz field as well as cavity electrodynamical dressing of solids.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.03519",
  "author_total": 10,
  "authors": [
    {
      "name": "Haotian Zhang"
    },
    {
      "name": "Yuheng Guo"
    },
    {
      "name": "Zidu Yu"
    },
    {
      "name": "Yongbo Lv"
    },
    {
      "name": "Yiting Wang"
    },
    {
      "name": "Liwen Feng"
    },
    {
      "name": "Jiaying Xu"
    },
    {
      "name": "Tianlong Xia"
    },
    {
      "name": "Xinbo Wang"
    },
    {
      "name": "Hao Chu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e8yre9xxgyyfv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.03519",
  "fulltext_url": null,
  "id": "e8yre9xxgyyfv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.03519",
  "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",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "2208|Terahertz technology and applications"
    ]
  ],
  "openalex": "W7208777425",
  "pdf_url": "https://arxiv.org/pdf/2609.03519",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e8yre9xxgyyfv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:31Z",
      "native_id": "2609.03519",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.03519"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Non-Resonant Impulsively Stimulated Raman Scattering by a Terahertz Field: a Case Study of 1T-TaS2",
  "title_text": "Non-Resonant Impulsively Stimulated Raman Scattering by a Terahertz Field: a Case Study of 1T-TaS2",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:31Z",
  "url": "https://research.draconitic.com/paper/e8yre9xxgyyfv",
  "venue": "arXiv",
  "versions": []
}