Nd3+ or Sm3+ doped oxyfluoride glass based on GeO2-PbO-PbF2. Synthesis and spectroscopic properties

• Autorzy: Klimesz B. , Dominiak-Dzik G. , Ryba-Romanowski W.
• Konferencja: 7th Seminar Porous Glasses - Special Glasses PGL, 2005, Szklarska Poręba, Poland, September 10-14, 2005 r.
• Języki publikacji: EN

Abstrakty

EN

Glasses with composition 50 GeO2-(45 - x)PbO-5 PbF2-x LnF3 (Ln = Nd or Sm, x = 0.2 and 2 mol%) were synthesised in the bulk form. Phase profiles and temperature characteristics were measured by differential thermal analysis (DTA); glass transition temperature Tg, as well as the b-PbF2 Tb and oxide glass crystallisation Tc temperatures have been derived for each individual system. A study of optical properties (absorption, emission) of the PbF2-Nd3+ and PbF2-Sm3+ was carried out. The oscillator strengths were obtained for several optical transitions and they have been used to calculate phenomenological intensity parameters W2, 4, 6. The probabilities of radiative transitions from fluorescent levels of Nd3+ and Sm3+ ions, as well as branching ratios and radiative lifetimes, were estimated on the basis of the Judd-Ofelt framework. The fluorescence dynamics of studied systems was measured. Experimental lifetimes were compared and discussed with those obtained with the Judd-Ofelt theory.

Słowa kluczowe

EN

oxyfluoride glasses; differential thermal analysis; DTA; optical properties; Judd-Ofelt analysis; lifetimes

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2005
• Tom: Vol. 35, nr 4
• Strony: 843--850
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Klimesz B.

• Physical Laboratory, Opole University of Technology, ul. Ozimska 75, 45-370 Opole

autor

Dominiak-Dzik G.

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-395 Wrocław, Poland

autor

Ryba-Romanowski W.

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-395 Wrocław, Poland

Bibliografia

• [1] Mendez-Ramos J., Lavín V., Martin I.R., Rodríguez-Mendoza U.R., González-Almeida J.A., Rodríguez V.D., Lozano-Gorrín A.D., Núnez P., Optical properties of Er3+ ions in transparent glass ceramics, Journal of Alloys and Compounds 323-324, 2001, pp. 753-8.
• [2] Guineos F.C., Nóbrega P.C., Santa-Cruz P. A., Compositional dependence ofup-conversion process in Tm3+-Yb3+ codoped oxyfluoride glasses and glass-ceramics, Journal of Alloys and Compounds 323-324, 2001, pp. 358-61.
• [3] Bueno L.A., Melnikov P., Messaddeq Y., Ribeiro S.J.L., Er3+ and Eu3+ containing transparent glass ceramics in the system PbGeO3-PbF2-CdF2, Journal of Non-Crystalline Solids 247, 1999, pp. 87-91.
• [4] Mortier M., Auzel F., Rare-earth doped transparent glass-ceramics with high cross-sections, Journal of Non-Crystalline Solids 256-257, 1999, pp. 361-5.
• [5] Mortier M., Patriarcee G., Structural characterisation of transparent oxyfluoride glass-ceramics, Journal of Materials Science 35(19), 2000, pp. 4849-56.
• [6] Mortier M., Goldner P., Chateau C., Genotelle M., Erbium doped glass-ceramics: concentration effect on crystal structure and energy transfer between active ions, Journal of Alloys and Compounds 323-324, 2001, pp. 245-9.
• [7] Eirao K., Tanaka K., Makita M., Soga N., Preparation and optical properties of transparent glass-ceramics containing beta -PbF2:Tm3+, Journal of Applied Physics 78(5), 1995, pp. 3445-50.
• [8] Klimesz B., Dominiak-Dzik G., Solarz P., Zeleceower M., Ryba-Romanowski W., Pr3+ and Tm3+ containing transparent glass ceramics in the GeO2-PbO-PbF2-LnF3 system, Journal of Alloys and Compounds 382(1-2), 2004, pp. 292-9.
• [9] Ryba-Romanowski W ., Dominiak-Dzik G. , Solarz P., Klimesz B ., Zeleceower M. , Effect of thermal treatment on luminescence and VUV-to-visible conversion in oxyfluoride glass singly doped with praseodymium and thulium, Journal of Non-Crystalline Solids 345-346, 2004, pp. 391-5.
• [10] Fokin V.M., Zanotto E.D., Surface and volume nucleation and growth in TiO2-cordierite glasses, Journal of Non-Crystalline Solids 246(1-2), 1999, pp. 115-27.
• [11] Schultze D., Differentialthermoanalyse, VEB, Berlin 1971.
• [12] Judd B.R., Optical absorption intensities of rare-earth ions, Physical Review 127(3), 1962, pp. 750-61.
• [13] Ofelt G.S., Intensities of crystal spectra of rare-earth ions, The Journal of Chemical Physics 37(3), 1962, pp. 511-20.
• [14] Wachtler M., Spegini A., Gatterer K., Fritzer H.P., Ajo D., Bettinelli M., Optical properties of rare-earth ions in lead germanate glasses, Journal of the American Ceramic Society 81(8), 1998, pp. 2045-52.
• [15] Reisfeld R., Radiative and non-radiative transitions of rare-earth ions in glasses, Structure and Bonding 22, 1975, pp. 123-75.
• [16] Boehm L., Reisfeld R., Spector N., Optical transitions of Sm3+ in oxide glasses, Journal of Solid State Chemistry 28(1), 1979, pp. 75-8.