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 language | English |
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Journal | Semiconductor Science and Technology |
Volume | 21 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2006 |