Abstract
Room-temperature exciton-polariton is observed in GaN/InGaN core–shell microrods grown by metal-organic vapor phase epitaxy. We demonstrate a large Rabi splitting in the core–shell microrod structure over 265 meV. Room-temperature lasing in core–shell microrods is confirmed by power-dependent photoluminescence spectra. The lasing in the shell layer results to a modulated lasing wavelength and takes one step further to more stable polariton lasing in MQW core–shell microrods.
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