Room-temperature polariton luminescence from a bulk GaN microcavity

We report strong exciton-photon coupling at room temperature in a hybrid high quality bulk 3 lambda/2 GaN cavity with a bottom lattice-matched AlInN/AlGaN distributed Bragg reflector through angle-resolved polarized photoluminescence (PL). Coupling of the optically active free excitons (X-A, X-B, and X-C) to the cavity mode is demonstrated, with their contribution to the PL spectra varying with polarization. Under TE polarization, exciton oscillator strengths for X-A and X-B are about one order of magnitude larger than in bulk GaAs. Photoluminescence exhibits a strong bottleneck effect despite its thermal lineshape.


Published in:
Physical Review B, 73, 3, 3315
Year:
2006
ISSN:
1098-0121
Keywords:
Laboratories:




 Record created 2010-10-05, last modified 2018-01-28


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