Excitation-induced coherence in a semiconductor microcavity

  title={Excitation-induced coherence in a semiconductor microcavity},
  author={L. Andrea Dunbar and Ross P Stanley and Merrill Lynch and John Hegarty and Ursula Oesterle and Romuald Houdr{\'e} and Marc Ilegems},
We measure the dephasing times of high finesse semiconductor microcavities in the strong coupling regime using degenerate four-wave mixing. We find that under certain excitation conditions ~near-normal incidence ! the dephasing time of the lower polariton branch increases with the excitation intensity. This excitation induced coherence indicates that the… CONTINUE READING