Super-enhancement of 1.54 μm emission from erbium codoped with oxygen in silicon-on-insulator

We report on the super enhancement of the 1.54 μm Er emission in erbium doped silicon-on-insulator when codoped with oxygen at a ratio of 1:1. This is attributed to a more favourable crystal field splitting in the substitutional tetrahedral site favoured for the singly coordinated case. The results...

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Bibliographic Details
Published in:Scientific reports 2016-11, Vol.6 (1), p.37501-37501, Article 37501
Main Authors: Lourenço, M. A., Milošević, M. M., Gorin, A., Gwilliam, R. M., Homewood, K. P.
Format: Article
Language:English
Subjects:
140/125
639/301/1005/1007
639/301/1019/1020/1093
639/624/1075/1080
639/624/399/1099
Humanities and Social Sciences
multidisciplinary
Science
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Summary:We report on the super enhancement of the 1.54 μm Er emission in erbium doped silicon-on-insulator when codoped with oxygen at a ratio of 1:1. This is attributed to a more favourable crystal field splitting in the substitutional tetrahedral site favoured for the singly coordinated case. The results on these carefully matched implant profiles show that optical response is highly determined by the amount and ratio of erbium and oxygen present in the sample and ratios of O:Er greater than unity are severely detrimental to the Er emission. The most efficient luminescence is forty times higher than in silicon-on-insulator implanted with Er only. This super enhancement now offers a realistic route not only for optical communication applications but also for the implementation of silicon photonic integrated circuits for sensing, biomedical instrumentation and quantum communication.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep37501