{
  "annotation_id": "a101ce34-dcf1-4e39-b8b3-621c530d697b",
  "date_created": "2026-03-02T18:01:06.617000Z",
  "date_modified": "2026-03-02T18:01:06.617000Z",
  "file_hash": "dd6174e160998f776c11538f2c11906d7bed3dc00ac351d3fc369e5d7b600a4f",
  "private": false,
  "record": {
    "abstract": "We present ultrafast all-optical switching measurements of Si woodpile\nphotonic band gap crystals. The crystals are spatially homogeneously excited,\nand probed by measuring reflectivity over an octave in frequency (including the\ntelecom range) as a function of time. After 300 fs, the complete stop band has\nshifted to higher frequencies as a result of optically excited free carriers.\nThe switched state relaxes quickly with a time constant of 18 ps. We present a\nquantitative analysis of switched spectra with theory for finite photonic\ncrystals. The induced changes in refractive index are well described by a Drude\nmodel with a carrier relaxation time of 10 fs. We briefly discuss possible\napplications of high-repetition rate switching of photonic crystal cavities.",
    "arxiv_id": "physics/0603045",
    "authors": [
      "Tijmen G. Euser",
      "Adriaan J. Molenaar",
      "J. G. Fleming",
      "Boris Gralak",
      "Albert Polman",
      "Willem L. Vos"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevB.77.115214",
    "journal_ref": "Phys. Rev. B 77, 115214 (2008) (6 pages)",
    "title": "All-optical octave-broad ultrafast switching of Si woodpile photonic   band gap crystals",
    "url": "https://arxiv.org/abs/physics/0603045"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8d3c15dc-3602-4a76-8ba3-5402f0e5b666",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}