{
  "annotation_id": "30dc6d55-836c-4e3c-a8a9-1fec921f6a99",
  "date_created": "2026-02-17T05:53:20.534000Z",
  "date_modified": "2026-02-17T05:53:20.534000Z",
  "file_hash": "03255643097e17dd703d3eefd878e9381c32d3f2246e30b314aa3bd0cbe56db2",
  "private": false,
  "record": {
    "abstract": "We investigate the feasibility of using high-harmonic generation (HHG) as a complementary probe of tunneling delay in strong-field ionization. By combining time--frequency analysis of HHG spectra obtained from full time-dependent Schr\\\"odinger equation (TDSE) simulations with classical three-step-model (TSM) trajectories, we extract an effective tunneling delay associated with electron motion through the laser-suppressed Coulomb barrier. The analysis is carried out for Hydrogen, Helium, and Argon atoms over a range of laser wavelengths and peak intensities within the tunneling regime. The extracted delay exhibits a systematic dependence on the instantaneous field strength and barrier width at the ionization time, and follows the expected $\\tau_d \\propto 1/\\sqrt{I_0}$ scaling consistent with Keldysh--Rutherford-type models and attoclock observations. When recast in terms of the Keldysh parameter, the tunneling delay collapses onto a near-universal trend across different atomic species. While HHG does not provide a direct measurement of tunneling time, the present results demonstrate that it can serve as a robust, internally consistent diagnostic of tunneling dynamics, offering an independent and complementary perspective to established attoclock techniques.",
    "arxiv_id": "2601.09252",
    "authors": [
      "Amol R. Holkundkar"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "High-harmonic generation as a tunneling delay probe",
    "url": "https://arxiv.org/abs/2601.09252",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e4f51ed7-ebd8-4293-85c1-c7519dfb6ce7",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}