Exciton-polaritons study in ZnO-based hybrid microcavities

Yu-Pin Lan; Ying-Yu Lai; Si-Wei Huang; Jun-Rong Chen; Yung-Chi Wu; Shiang-Chi Lin; Tien-Chang Lu; Shing-Chung Wang; Wen-Feng Hsieh; Hui Deng

doi:10.1117/12.908529

28 February 2012 Exciton-polaritons study in ZnO-based hybrid microcavities

Yu-Pin Lan, Ying-Yu Lai, Si-Wei Huang, Jun-Rong Chen, Yung-Chi Wu, Shiang-Chi Lin, Tien-Chang Lu, Shing-Chung Wang, Wen-Feng Hsieh, Hui Deng

Author Affiliations +

Proceedings Volume 8255, Physics and Simulation of Optoelectronic Devices XX; 82551F (2012) https://doi.org/10.1117/12.908529
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

The characteristics of exciton-polaritons in ZnO-based microcavities (MCs) are demonstrated with a large vacuum Rabi splitting due to large exciton binding energy and oscillator strength. The lower polariton branches (LPBs) can be clearly observed. For low temperature and large negative detuning conditions, a clear polariton relaxation bottleneck in bulk ZnO-based MCs has been observed in angle-resolved photoluminescence measurements from 100 to 353 K at different cavity-exciton detunings. The bottleneck is strongly suppressed with increasing the temperature and pumping power and reducing detuning. This observed results supposed to be due to more efficient phonon-assisted relaxation and a longer radiative lifetime of the polaritons. In addition, the linewidth broadening, blue-shift of the emission peak, and polarization of polariton lasing from below threshold to up threshold are also discussed.

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Yu-Pin Lan, Ying-Yu Lai, Si-Wei Huang, Jun-Rong Chen, Yung-Chi Wu, Shiang-Chi Lin, Tien-Chang Lu, Shing-Chung Wang, Wen-Feng Hsieh, and Hui Deng "Exciton-polaritons study in ZnO-based hybrid microcavities", Proc. SPIE 8255, Physics and Simulation of Optoelectronic Devices XX, 82551F (28 February 2012); https://doi.org/10.1117/12.908529

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KEYWORDS

Polaritons

Optical microcavities

Zinc oxide

Excitons

Photons

Reflectivity

Dispersion

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