{
  "id": "cond-mat/0207057",
  "version": "v1",
  "published": "2002-07-02T12:10:25.000Z",
  "updated": "2002-07-02T12:10:25.000Z",
  "title": "Gain in quantum cascade lasers and superlattices: A quantum transport theory",
  "authors": [
    "Andreas Wacker"
  ],
  "comment": "8 Pages, 4 Figures directly included, to appear in Physical Review B",
  "journal": "Physical Review B 66, 085326 (2002)",
  "doi": "10.1103/PhysRevB.66.085326",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Gain in current-driven semiconductor heterostructure devices is calculated within the theory of nonequilibrium Green functions. In order to treat the nonequilibrium distribution self-consistently the full two-time structure of the theory is employed without relying on any sort of Kadanoff-Baym Ansatz. The results are independent of the choice of the electromagnetic field if the variation of the self-energy is taken into account. Excellent quantitative agreement is obtained with the experimental gain spectrum of a quantum cascade laser. Calculations for semiconductor superlattices show that the simple 2-time miniband transport model gives reliable results for large miniband widths at room temperature",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-07-02T12:10:25.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.40.-c",
      "05.60.Gg",
      "42.55.Px",
      "78.67.-n"
    ],
    "keywords": [
      "quantum cascade laser",
      "quantum transport theory",
      "superlattices",
      "current-driven semiconductor heterostructure devices",
      "miniband transport model"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2002,
      "month": "Aug",
      "volume": 66,
      "number": 8,
      "pages": "085326"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2002PhRvB..66h5326W"
    }
  }
}