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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XX
Number of pages6
DOIs
StatePublished - Jan 2012
EventPhysics and Simulation of Optoelectronic Devices XX - San Francisco, CA, United States
Duration: 23 Jan 201226 Jan 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8255
ISSN (Print)0277-786X

Conference

ConferencePhysics and Simulation of Optoelectronic Devices XX
CountryUnited States
CitySan Francisco, CA
Period23/01/1226/01/12

Keywords

  • Exciton-polariton
  • Microcavity
  • ZnO

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