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Proceedings Paper

Upconversion emission investigation of Tb3+/Yb3+ codoped CdF2 single crystals under infrared laser pump
Author(s): H. Boubekri; M. Diaf ; Th. Pauporté; B. Viana; J.P. Jouart
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Paper Abstract

Tb3+/Yb3+ co-doped CdF2 single crystals were successfully fabricated by the Bridgman technique from a vacuum furnace in fluoride atmosphere. The structural and luminescent properties were investigated by X-ray diffraction, optical absorption and luminescence techniques at room temperature. The emission spectra exhibit a weak blue and green emission under 350 nm excitation and a strong emission under 975 nm in the spectral range 450 – 510 nm and 510 – 570 nm which are assigned to 5D47F6 and 5D47F5 transitions of Tb3+ ions, respectively. Furthermore, the time resolved decay time spectra are also obtained using pulse laser. The obtained upconversion spectra under 940 nm diode laser excitation at different powers showed the two-photon absorption process responsible of blue, green and red emissions.

Paper Details

Date Published: 22 February 2018
PDF: 6 pages
Proc. SPIE 10528, Optical Components and Materials XV, 105281Y (22 February 2018); doi: 10.1117/12.2294940
Show Author Affiliations
H. Boubekri, Ecole Normale Supérieure d'Enseignement Technologique (Algeria)
Badji Mokhtar Annaba Univ. (Algeria)
M. Diaf , Badji Mokhtar Annaba Univ. (Algeria)
Th. Pauporté, PSL Research Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
B. Viana, PSL Research Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
J.P. Jouart, Univ. de Reims Champagne-Ardenne (France)

Published in SPIE Proceedings Vol. 10528:
Optical Components and Materials XV
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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