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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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.
|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
|Date Deposited:||06 Oct 2009 10:01|
|Last Modified:||27 Mar 2014 20:14|
|Further Information:||Google Scholar|
|ISI Citation Count:||4|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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