Numéro
J. Phys. IV France
Volume 04, Numéro C4, Avril 1994
3rd International Conference Laser M2P
Page(s) C4-447 - C4-450
DOI http://dx.doi.org/10.1051/jp4:19944107
3rd International Conference Laser M2P

J. Phys. IV France 04 (1994) C4-447-C4-450

DOI: 10.1051/jp4:19944107

U3+ doped fluoride glass emission at 2.5 µm

J. LAMBARD1, A.M. JURDYC2, B. JACQUIER2, M.F. JOUBERT2 and R. MAHIOU3

1  CEA Saclay, SCM Bât. 125, 91191 Gif-sur-Yvette cedex, France
2  URA 442 du CNRS, Université Lyon I, Bd du 11 Novembre 1918, 69622 Villeurbanne cedex, France
3  URA 444 du CNRS, Université Blaise Pascal, Clermont II, 63177 Aubière cedex, France


Abstract
Fluorescence dynamics of trivalent uranium in ZBLAN or BATY glasses and ZBLAN fiber has been investigated at various temperatures. A carefull fluorescence analysis of all these systems allows to identify some of the crystal field components of the ground level J=9/2. Fluorescence decays of the 2.5µm emission have been recorded using an infrared nanosecond pulsed laser indicating an average lifetime of hundred of milliseconds at low concentration. The non exponential behavior of the decay increases with concentration.



© EDP Sciences 1994