Towards electrically‐pumped microcavity polariton lasers

We present preliminary experimental results on a doped-DBR microcavity diode sample, designed for electrically-pumped operation at the elevated temperatures around 200 K. Low temperature reflectivity measurements as a function of incidence angle have shown clear evidence of polaritons in the strong coupling regime in this sample. Moreover, reflectivity spectra recorded at various temperatures between 185 and 217 K have demonstrated that the strong coupling regime persists at these elevated temperatures. Our results are very promising for the realization of polaritonic devices under electrical injection. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)