Optics and Spectroscopy

, Volume 94, Issue 5, pp 784–787 | Cite as

Incoherent properties of induced radiation

  • B. A. Veklenko
Classical States of Light


The evolution of a quantized electromagnetic field in a thermally excited dispersion medium is determined by two scattering channels. The coherent channel is formed exclusively by the elastic scattering of quanta. The incoherent channel, along with elastic scattering processes, necessarily contains inelastic scattering processes, including induced radiation. Interference between the channels is absent because of the orthogonality of the wave functions of the medium in its final states, which correspond to different scattering channels. Therefore, in an excited medium, interference processes that are not described by its refractive index may arise. An interference pattern of this kind can be formed, in particular, as a result of the superposition of the resonance radiation incident on an excited medium and the radiation reflected from this medium. In this case, the conventional perturbation theory proves to be inadequate.


Wave Function Interference Pattern Quantum Electrodynamic Excited Medium Photon Density 
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Copyright information

© MAIK "Nauka/Interperiodica" 2003

Authors and Affiliations

  • B. A. Veklenko
    • 1
  1. 1.Moscow Power Engineering Institute (Technical University)MoscowRussia

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