Please use this identifier to cite or link to this item: doi:10.22028/D291-24242
Title: Optical spectroscopy of Er3+ and Yb3+ co-doped fluoroindate glasses
Author(s): Ribeiro, C. T.M.
Zanatta, A. R.
Nunes, Luis A. O.
Messaddeq, Younes
Aegerter, Michel A.
Language: English
Year of Publication: 1998
OPUS Source: Journal of applied physics. - 83. 1998, 4, S. 2256-2260
SWD key words: Optische Spektroskopie
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Optical absorption, Stokes, and anti-Stokes photoluminescence were performed on Er3+-Yb3+ co-doped fluoroindate glasses. For compounds prepared with a fixed 2 mol % ErF3 concentration and YbF3 contents ranging from 0 to 8 mol %, important upconversion processes were observed as a function of temperature and photon excitation energy. Based on the experimental data, two mechanisms for the upconversion (or anti-Stokes photoluminescence) processes were identified and analyzed in detail. At high Yb contents, the upconversion mechanisms are mostly determined by the population of the 2F5/2 levels of Yb3+ ions (or 4I11/2 levels of Er3+ ions, by energy transfer) regardless of the photon excitation energy and temperature of measurement. Moreover, green and red light emission have similar intensities when a large Yb3+ content is present.
Link to this record: urn:nbn:de:bsz:291-scidok-24864
Date of registration: 3-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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