Exciton-photon coupling in a ZnSe-based microcavity fabricated using epitaxial liftoff

A. Curran, J. K. Morrod, K. A. Prior, A. K. Kar, R. J. Warburton

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We report the observation of strong exciton-photon coupling in a ZnSe-based microcavity fabricated using epitaxial liftoff. Molecular beam epitaxial grown ZnSe/Zn0.9Cd0.1Se quantum wells with a one wavelength optical length at the exciton emission were transferred to a SiO 2/Ta2O5 mirror with a reflectance of 96% to form finesse matched microcavities. Analysis of our angle-resolved transmission spectra reveals key features of the strong coupling regime: anticrossing with a normal mode splitting of 23.6 meV at 20 K, composite evolution of the lower and upper polaritons and narrowing of the lower polariton linewidth near resonance. The heavy-hole exciton oscillator strength per quantum well is also deduced to be 1.78 × 1013 cm-2. © 2007 IOP Publishing Ltd.

Original languageEnglish
Pages (from-to)1189-1192
Number of pages4
JournalSemiconductor Science and Technology
Volume22
Issue number11
DOIs
Publication statusPublished - 1 Nov 2007

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