Halder, Arindam and Paul, Mukul Chandra and Bhadra, Shyamal Kumar and Bysakh, Sandip and Das, Shyamal and Pal, Mrinmay (2015) Fabrication and Spectroscopic Analysis of Yb-Tm Co-Doped Nano-Phase Separated Yttrium-Germanium-Aluminium-Phospho-Silicate Composite Glass Optical Fibers. Science of Advanced Materials, 7 (4). pp. 631-642. ISSN 1947-2935

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Abstract

A new class of Yb-Tm co-doped nano-phase separated yttrium germanium aluminium phospho silica composite optical fiber has been fabricated using a modified chemical vapour deposition process with a solution doping technique in order to achieve more intense up-conversion luminescence in visible region. A strong 474 nm up-conversion luminescence, along with three peaks at 364, 650 and 790 nm of Tm3+, have been detected under excitation at 975 nm. The observation of a 474 nm strong up-conversion emission in comparison with other three emission peaks is explained using energy transfer coefficient values obtained from kinetic model of energy transfer up-conversion process. The strong up-conversion emission (474 nm) of yttrium-germanium-aluminium-phospho-silica composite optical fibers compared to yttrium aluminium silicate composite fiber is detected due to the high value of third energy transfer coefficient (W-3) associated with the 474 nm emission. Tm-Yb doped nano-engineered optical fibers would be suitable for efficient power tunable 474 nm light source for several applications.

Item Type:	Article
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	30 Dec 2015 05:51
Last Modified:	30 Dec 2015 05:51
URI:	http://cgcri.csircentral.net/id/eprint/2996

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