Investigation of neodymium-diffused yttrium vanadate waveguides by confocal microluminescence
Investigation of neodymium-diffused yttrium vanadate waveguides by confocal microluminescence
We report on the confocal microspectroscopic characterization of planar optical waveguides fabricated in yttrium vanadate (YVO4) crystals by thermal diffusion of neodymium ions. We have found that the waveguide formation is accompanied by Nd3+ fluorescence quenching and by a redshift of the Nd3+ sub-Stark transitions. These effects have been explained in terms of the high Nd3+ concentrations achieved close to the diffusion surface, which lead to the appearance of nonradiative processes, as well as to a local compression in the surroundings of the indiffused Nd3+ ions. By comparing with previous works, we have estimated an equivalent residual stress of 0.1 GPa. The possible mechanisms at the origin of waveguide formation have been also discussed.
103104-[6pp]
Benayas, A.
a93e1d75-064f-45c1-b5c7-e481b7486e55
Jaque, D.
fccfadef-ede9-4956-afde-4555a1e6c2f1
Hettrick, S.J.
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Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
15 May 2008
Benayas, A.
a93e1d75-064f-45c1-b5c7-e481b7486e55
Jaque, D.
fccfadef-ede9-4956-afde-4555a1e6c2f1
Hettrick, S.J.
9eef9cf0-86e8-4562-bead-684915a1de5c
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Benayas, A., Jaque, D., Hettrick, S.J., Wilkinson, J.S. and Shepherd, D.P.
(2008)
Investigation of neodymium-diffused yttrium vanadate waveguides by confocal microluminescence.
Journal of Applied Physics, 103 (10), .
(doi:10.1063/1.2924321).
Abstract
We report on the confocal microspectroscopic characterization of planar optical waveguides fabricated in yttrium vanadate (YVO4) crystals by thermal diffusion of neodymium ions. We have found that the waveguide formation is accompanied by Nd3+ fluorescence quenching and by a redshift of the Nd3+ sub-Stark transitions. These effects have been explained in terms of the high Nd3+ concentrations achieved close to the diffusion surface, which lead to the appearance of nonradiative processes, as well as to a local compression in the surroundings of the indiffused Nd3+ ions. By comparing with previous works, we have estimated an equivalent residual stress of 0.1 GPa. The possible mechanisms at the origin of waveguide formation have been also discussed.
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Published date: 15 May 2008
Organisations:
Optoelectronics Research Centre, Electronics & Computer Science
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Local EPrints ID: 268003
URI: http://eprints.soton.ac.uk/id/eprint/268003
ISSN: 0021-8979
PURE UUID: fc63cc80-600e-4d08-b670-d16d85f19d96
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Date deposited: 06 Oct 2009 10:01
Last modified: 15 Mar 2024 02:40
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Author:
A. Benayas
Author:
D. Jaque
Author:
S.J. Hettrick
Author:
D.P. Shepherd
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