Whispering gallery mode emission at telecommunications-window wavelengths using PbSe nanocrystals attached to photonic beads
Whispering gallery mode emission at telecommunications-window wavelengths using PbSe nanocrystals attached to photonic beads
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.
L21-L24
Finlayson, C.E.
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Sazio, P.J.A.
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Sanchez-Martin, R.
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Bradley, M.
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Kelf, T.
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Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
2006
Finlayson, C.E.
bcc6c2a7-e346-4b08-93e7-be12c7033dac
Sazio, P.J.A.
0d6200b5-9947-469a-8e97-9147da8a7158
Sanchez-Martin, R.
b5573cf2-d7fd-45c5-8560-2901bf7f8851
Bradley, M.
078a34d6-96c4-4ce1-9aa1-454d9ee0030d
Kelf, T.
0423a730-e438-428d-b441-50065a1e381c
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Finlayson, C.E., Sazio, P.J.A., Sanchez-Martin, R., Bradley, M., Kelf, T. and Baumberg, J.J.
(2006)
Whispering gallery mode emission at telecommunications-window wavelengths using PbSe nanocrystals attached to photonic beads.
Semiconductor Science and Technology, 21 (3), .
(doi:10.1088/0268-1242/21/3/L01).
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.
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Published date: 2006
Identifiers
Local EPrints ID: 19152
URI: http://eprints.soton.ac.uk/id/eprint/19152
ISSN: 0268-1242
PURE UUID: ab0c8cd6-a7e9-4812-8ebb-29aedfe1b5dc
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Date deposited: 16 Jan 2006
Last modified: 16 Mar 2024 03:26
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Contributors
Author:
C.E. Finlayson
Author:
R. Sanchez-Martin
Author:
M. Bradley
Author:
T. Kelf
Author:
J.J. Baumberg
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