J. Phys. IV France 04 (1994) C4-345-C4-348
Spectroscopic properties of KZnF3 : Cr3+M.A. ILLARRAMENDI, R. BALDA and J. FERNÁNDEZ
Departamento de Física Aplicada, I.E.T.S.I.I. y Tel, Universidad del País Vasco, Alameda de Urquijo s/n, 48013 Bilbao, Spain
The optical properties of Cr3+ in KZnF3 have been investigated in the 4.2-625K temperature range by using steady-state and time-resolved laser spectroscopy. The luminescence shows a strong thermal quenching above 400K which can be analyzed on the basis of the quantum-mechanical single-configurational-coordinate model by using the Struck and Fonger method. Emission lifetime measurements and time resolved spectra show the existence of different Cr3+ centers in this host.
© EDP Sciences 1994