Abstract
The temperature dependent linewidths of homogeneously broadened microcavity polaritons are investigated. The linewidths of the lower, middle, and upper polariton resonances are measured directly from reflection spectra at normal incidence The linewidth of the lower polariton is found to be smaller than the linewidths of the middle and upper polaritons at all investigated temperatures ranging from 11 to 100 K. The results clearly show the reduction of dynamic scattering processes in the lower polariton compared to the middle and upper polaritons, in agreement with theoretical predictions in literature. A nontrivial temperature dependence of the linewidth is found and its physical origin is discussed.
- Received 21 December 1999
DOI:https://doi.org/10.1103/PhysRevB.61.R13377
©2000 American Physical Society