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Investigation of neodymium-diffused yttrium vanadate waveguides by confocal microluminescence

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), 103104-[6pp].

Record type: Article


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


Local EPrints ID: 268003
ISSN: 0021-8979
PURE UUID: fc63cc80-600e-4d08-b670-d16d85f19d96
ORCID for J.S. Wilkinson: ORCID iD
ORCID for D.P. Shepherd: ORCID iD

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Date deposited: 06 Oct 2009 10:01
Last modified: 13 Oct 2017 09:26

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