Original Publication Date
Applied Physics Letters
DOI of Original Publication
Date of Submission
Among wide-bandgap semiconductors, ZnO is a very attractive candidate for blue-ultraviolet lasers operating at room temperature owing to its large exciton binding energy and oscillator strength. Especially, ZnO-based microcavity structures are most conducive for polariton lasing at room temperature. We report the observation of cavitypolaritons in bulk ZnO-based hybrid microcavities at room temperature. The bulk ZnO-based hybrid microcavities are composed of 29 pairs of Al0.5Ga0.5N∕GaNdistributed Bragg reflector (DBR) at the bottom of the λ-thick cavity layer and eight pairs of SiO2∕Si3N4 DBR as the top mirror, which provided cavityQvalues of ∼100. Anticrossing behavior between the lower and upper polariton branches was observed at room temperature. From the polariton dispersion curve, the vacuum Rabi splitting was estimated to be ∼50meV. These results are promising toward the realization of ZnO-based microcavity polariton devices.
Shimada, R., Xie, J., Avrutin, V., et al. Cavity polaritons in ZnO-based hybrid microcavities. Applied Physics Letters, 92, 011127 (2008). Copyright © 2008 AIP Publishing LLC.
Is Part Of
VCU Electrical and Computer Engineering Publications