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Experimental Evidence of the Existence of an Intermediate Excitonic Polariton in CuCl

  • E. Ostertag
  • Vu Duy Phach

Abstract

When two laser beams propagate in opposite directions in thin samples of CuCl at 4.2 K, with photon energies adjusted so that their sum amounts exactly to the energy of a biexciton in this material, biexcitons of very small wave vectors are created. Their radiative recombination gives rise to a new narrow emission line, which has been attributed to the process in which the observed photon belongs to the lower branch and the remaining particle to the “intermediate” branch of the polariton dispersion curve, as given by a two-oscillator model.

Keywords

Radiative Recombination Small Wave Vector Physica Status Solidus Polariton Branch Narrow Emission Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1981

Authors and Affiliations

  • E. Ostertag
    • 1
  • Vu Duy Phach
    • 1
  1. 1.Laboratoire de Spectroscopie et d’Optique du Corps Solide, Associé au C.N.R.S. n° 232Université Louis PasteurStrasbourgFrance

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