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Jacques Lucas

Bio: Jacques Lucas is an academic researcher. The author has contributed to research in topics: Photon upconversion & Infrared. The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

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Journal ArticleDOI
TL;DR: In this paper, the up-conversion process in co-doped fluorophosphate glasses was studied and it was shown that the green luminescence vanishes with increasing Yb 3+ concentration and a blue emission appears.
Abstract: Up-conversion processes are studied in (Yb 3+ , Tb 3+ ) co-doped fluorophosphate glasses. These glasses contain a large concentration of terbium fluoride, up to 36 mol%, and still luminesc. Samples are excited at 980 nm, within the Yb 3+ absorption band. For `low' Yb 3+ concentrations, i.e., below 16 mol%, the typical green luminescence of terbium is observed. With increasing Yb 3+ concentration, the green luminescence vanishes and a blue emission appears. Both emissions are due to a cooperative effect between two Yb 3+ ions.

38 citations

Book ChapterDOI
01 Jan 2000

17 citations