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]. (doi:10.1063/1.2924321).

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Description/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.

Item Type: Article
ISSNs: 0021-8979 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
Faculty of Physical Sciences and Engineering > Electronics and Computer Science
ePrint ID: 268003
Date Deposited: 06 Oct 2009 10:01
Last Modified: 27 Mar 2014 20:14
Further Information:Google Scholar
ISI Citation Count:4
URI: http://eprints.soton.ac.uk/id/eprint/268003

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