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Your search keyword '"Monteiro, T."' showing total 12 results
Start Over Author "Monteiro, T." Journal optical materials
12 results on '"Monteiro, T."'

11. Effects of ultraviolet excitation on the spectroscopic properties of Sm3+ and Tb3+ doped aluminophosphate glasses.

Author

Nico, C., Graça, M.P.F., Elisa, M., Sava, B.A., Monteiro, R.C.C., Rino, L., and Monteiro, T.

Subjects
*ULTRAVIOLET spectroscopy, *EXCITON theory, *SAMARIUM compounds, *METAL ions, *DOPED semiconductors, *ALUMINOPHOSPHATES, *GLASS
Abstract

Highlights: [•] Ln-doped aluminophosphate glasses were prepared by a non-conventional method. [•] Trivalent Sm and Tb ions were found to be optically activated in all glasses. [•] Emission of divalente Sm was detected in one of the glasses. [•] Intense luminescence at room-temperature was achieved exciting with a UV laser. [ABSTRACT FROM AUTHOR]

Published
2013
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12. Red and infrared luminescence from tetragonal YSZ:Pr3+ single crystal fibres grown by LFZ

Author

Soares, M.R.N., Nico, C., Rodrigues, J., Peres, M., Soares, M.J., Fernandes, A.J.S., Costa, F.M., and Monteiro, T.

Subjects
*INFRARED spectroscopy, *ZIRCONIUM oxide, *CRYSTAL whiskers, *RARE earth ions, *CRYSTAL growth, *TEMPERATURE effect, *OPTICAL pumping, *PHASE transitions, *ELECTRONIC excitation
Abstract

Abstract: Single crystal fibres of Pr3+-doped tetragonal yttria stabilized zirconia were grown by the laser floating zone method. The fibres show strong red luminescence at room temperature under ultraviolet optical pumping, which is due to the transition between the 1D2 and 3H4 multiplets of the Pr3+ ion. Additionally, in the infrared spectral range main transitions were found at ∼1140nm and 1560nm. Their intensity ratio was shown to be dependent on the excitation wavelength, suggesting the presence of multiple Pr3+-related centres. [Copyright &y& Elsevier]

Published
2011
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