Whispering gallery mode emission at telecommunications-window wavelengths using PbSe nanocrystals attached to photonic beads

C. E. Finlayson*, P. J A Sazio, R. Sanchez-Martin, M. Bradley, T. A. Kelf, J. J. Baumberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We report the selective chemical attachment of infrared emitting PbSe nanocrystal quantum dots onto micron-scale glass photonic beads. Upon optical excitation, photoluminescence from the shell of nanocrystals is seen to couple into the high-Q 'whispering gallery' modes of the bead via the evanescent optical field, resulting in a series of sharp peaks being observed at wavelengths of around 1550 nm. Theoretical modelling gives a close agreement with the data for angular modes corresponding to l ∼ 120. This work demonstrates the potential of narrow-bandgap II-VI semiconductor nanocrystals for use in a wide range of telecommunications-window photonics applications.

Original languageEnglish
JournalSemiconductor Science and Technology
Volume21
Issue number3
DOIs
Publication statusPublished - 1 Mar 2006

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