Doping silica beyond limits with laser plasma for active photonic materials

The limited solubility of rare-earths in silica hampers the development of loss-compensated photonic integrated circuits. We report a novel method using femtosecond laser plasma assisted hybrid material integration of rare-earth-doped tellurite with silica, achieving high doping concentration of Er...

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Bibliographic Details
Published inOptical materials express Vol. 5; no. 12; pp. 2849 - 2861
Main Authors Chandrappan, Jayakrishnan, Murray, Matthew, Petrik, Peter, Agocs, Emil, Zolnai, Zsolt, Tempez, Agnès, Legendre, Sébastien, Steenson, D. P., Jha, Animesh, Jose, Gin
Format Journal Article
LanguageEnglish
Published 01.12.2015
Subjects
Doping
Femtosecond
Glass
Laser plasmas
Photonics
Rare earth metals
Silicon dioxide
Solubility
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Summary:The limited solubility of rare-earths in silica hampers the development of loss-compensated photonic integrated circuits. We report a novel method using femtosecond laser plasma assisted hybrid material integration of rare-earth-doped tellurite with silica, achieving high doping concentration of Er super(3+) and Yb super(3+)-ions, 1.63 x 10 super(21) atoms.cm super(-3), without segregation validated by Er super(3+): super(4)I sub(13/2) lifetime of 9.1 ms. The sequential ablation of two individual rare-earth (Er super(3+)/Yb super(3+)) doped-tellurite glass targets produces an exceptional intermixing of Er super(3+) and Yb super(3+)-ions extending to the pristine silica with sharp interface. Formation of such homogeneous glass structure with Er super(3+)-Yb super(3+)-ion s in a matrix of silica is not possible to realise by conventional methods.
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ISSN:2159-3930
2159-3930
DOI:10.1364/OME.5.002849