Silicon nanocrystal photoluminescence in cylindrical whispering gallery resonators

ORAL

Abstract

We present photoluminescence studies of Silicon-nanocrystal (Si-NC) coated cylindrycal microcavities. The coatings were prepared by dip-coating standard optical fibers with a solution-based precursor followed by a high-temperature annealing step. The photoluminescence spectra measured perpendicular to the fiber axis show high Q-factor ($\sim$2500) whispering gallery modes, and allows distinction between TE and TM modes. We also show a proof-of-principle implementation of a far-field refractometric sensor using a nanocrystal-coated fiber.

–

Authors

  • P. Bianucci

    Department of Physics, University of Alberta, Edmonton AB, T6G 2G7, Canada

  • J.R. Rodr\'Iguez

    Department of Chemistry, University of Alberta, Edmonton AB, T6G 2G2, Canada

  • C.M. Clements

    Department of Physics, University of Alberta, Edmonton AB, T6G 2G7, Canada

  • J.G.C. Veinot

    Department of Chemistry, University of Alberta, Edmonton AB, T6G 2G2, Canada

  • A. Meldrum

    Department of Physics, University of Alberta, Edmonton AB, T6G 2G7, Canada