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Energy transfer and enhanced 1.54 μm emission in Erbium-Ytterbium disilicate thin films.

Miritello, M and Cardile, P and Lo Savio, R and Priolo, F (2011) Energy transfer and enhanced 1.54 μm emission in Erbium-Ytterbium disilicate thin films. Opt Express, 19. pp. 20761-20772.

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Abstract

α-(Yb1-xErx)2Si2O7 thin films on Si substrates were synthesized by magnetron co-sputtering. The optical emission from Er3+ ions has been extensively investigated, evidencing the very efficient role of Yb-Er coupling. The energy-transfer coefficient was evaluated for an extended range of Er content (between 0.2 and 16.5 at.%) reaching a maximum value of 2 × 10⁻¹⁶ cm⁻³s⁻¹. The highest photoluminescence emission at 1535 nm is obtained as a result of the best compromise between the number of Yb donors (16.4 at.%) and Er acceptors (1.6 at.%), for which a high population of the first excited state is reached. These results are very promising for the realization of 1.54 μm optical amplifiers on a Si platform.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:55
Last Modified: 27 Aug 2014 19:00
DOI:

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