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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
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.
0268-1242
L21-L24
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.
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), L21-L24. (doi:10.1088/0268-1242/21/3/L01).

Record type: Article

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
ORCID for P.J.A. Sazio: ORCID iD orcid.org/0000-0002-6506-9266

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Date deposited: 16 Jan 2006
Last modified: 17 Jul 2017 16:33

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Contributors

Author: C.E. Finlayson
Author: P.J.A. Sazio ORCID iD
Author: R. Sanchez-Martin
Author: M. Bradley
Author: T. Kelf
Author: J.J. Baumberg

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