Fluorescence properties of Nd3+-doped tellurite glasses

Upendra, Kumar K.; Prathyusha, V. A.; Babu, P.; Jayasankar, C. K.; Joshi, A. S.; Speghini, Adolfo; Bettinelli, Marco Giovanni

doi:10.1016/j.saa.2006.08.027

The compositional and concentration dependence of luminescence of the F-4(3/2) -> I-4(J) (J = 13/2, 11/2 and 9/2) transitions in four Nd3+-doped tellurite based glasses has been studied. The free-ion energy levels obtained for 60TeO(2) + 39ZnO(2) + 1.0Nd(2)O(3) (TZN10) glass have been analysed using the free-ion Hamiltonian model and compared with similar results obtained for Nd3+ :glass systems. The absorption spectrum of TZN10 glass has been analysed using the Judd-Ofelt theory. Relatively longer decay rates have been obtained for Nd3+-doped phosphotellurite glasses. The emission characteristics of the F-4(3/2) -> I-4(11/2) transition, of the Nd3+ :TZN10 glass, are found to be comparable to those obtained for Nd3+ :phosphate laser glasses. The non-exponential shape of the emission decay curves for the F-4(3/2) -> I-4(11/2) transition is attributed to the presence of energy transfer processes between the Nd3+ ions.

Titolo:	Fluorescence properties of Nd3+-doped tellurite glasses
Autori:	KUMAR K. UPENDRA PRATHYUSHA V. A. BABU P. JAYASANKAR C. K. JOSHI A. S. SPEGHINI, Adolfo BETTINELLI, Marco Giovanni mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2007
Rivista:	SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Abstract:	The compositional and concentration dependence of luminescence of the F-4(3/2) -> I-4(J) (J = 13/2, 11/2 and 9/2) transitions in four Nd3+-doped tellurite based glasses has been studied. The free-ion energy levels obtained for 60TeO(2) + 39ZnO(2) + 1.0Nd(2)O(3) (TZN10) glass have been analysed using the free-ion Hamiltonian model and compared with similar results obtained for Nd3+ :glass systems. The absorption spectrum of TZN10 glass has been analysed using the Judd-Ofelt theory. Relatively longer decay rates have been obtained for Nd3+-doped phosphotellurite glasses. The emission characteristics of the F-4(3/2) -> I-4(11/2) transition, of the Nd3+ :TZN10 glass, are found to be comparable to those obtained for Nd3+ :phosphate laser glasses. The non-exponential shape of the emission decay curves for the F-4(3/2) -> I-4(11/2) transition is attributed to the presence of energy transfer processes between the Nd3+ ions.
Handle:	http://hdl.handle.net/11562/306901
Appare nelle tipologie:	01.01 Articolo in Rivista

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