Enhanced optical properties of Tm3+ in f co-doped lead germanate glasses for fibre device applications


Wang, J., Hector, J., Brocklesby, W.S., Brinck, D.J. and Payne, D.N. (1996) Enhanced optical properties of Tm3+ in f co-doped lead germanate glasses for fibre device applications At MRS Spring Meeting 1996: Fiber materials for electronics & sensors, United States.

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Description/Abstract

The effect on structure and property of adding fluoride into Tm3+ doped lead-germanate glass was established and verified experimentally. It was found that up to 10 mol% of fluoride could be introduced into our original lead-germanate composition while retaining the high thermal stability ideal for fibre fabrication. Much improved spectroscopic features, namely increased fluorescent lifetimes from 3H4 and 3F4 levels in Tm3+ with increasing fluorine content, were observed. At the same time it was found that the radiative properties of Tm3+ were left unchanged by fluoride addition, indicating that reduced multiphonon relaxation was responsible for the increased fluorescent lifetimes. This was well explained and foreseen by our established structure-property relation in terms of adding fluorine to the glass. In conclusion, fluoro-germanate glass shows advantages over germanate glass in optical properties and over fluoride glass in chemical and mechanical properties for practical fiber device applications. [Presentation slides]

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: MRS Spring Meeting 1996: Fiber materials for electronics & sensors, United States, 1996-01-01
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ePrint ID: 76915
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Date Event
1996Published
Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:36
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/76915

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