Physical, optical and luminescence properties of B2O3-SiO2-Y2O3-CaO glasses with Sm3+ions for visible laser applications

Physical, optical and luminescence properties of B2O3-SiO2-Y2O3-CaO glasses with Sm3+ions for... Silicoborate glasses with composition of (BSYCaSm:(55-x)B2O3+ 10SiO2 +25Y2O3 +10CaO + xSm2O3), (where, x= 0.05, 0.10, 0.20, 0.25, 0.30, 0.40, 0.50, mol%) have been synthesized by using the well-known melt quenching technique. The present work deals with physical, optical, photoluminescence, X-ray luminescence and decay time studies of silicoborate glasses. Judd-Ofelt (JO) intensity parameters (Ω2, Ω4 and Ω6) and radiative properties for the important luminescent level of Sm3+ ions were derived by using the absorption spectrum of 0.3mol% Sm2O3 doped glass. The luminescence spectra in the visible region was obtained due to 4G5/2 → 6HJ (5/2, 7/2, 9/2 and 11/2) transition of Sm3+ ion under 401nm excitation. The decay profile for the 4G5/2 level of Sm3+ ions was analyzed and found that for lower concentration (≤ 0.20mol%) it is single exponential in nature whereas for higher concentration (≥ 0.25mol%), it turns in to non-exponential due to the transfer of energy between donor (excited state Sm3+ion) and acceptor (ground state Sm3+ ion). As the concentration of Sm3+ ions increases the decay time of 4G5/2 state decreases. The well-known Inokuti-Hirayama (IH) model was used for fitting the non-exponential decay curves where S = 6 indicates that energy transfer process is of dipole-dipole type. Hence, in the present work, intense transition of 4G5/2 → 6H7/2 (601nm) is found to be suitable for reddish-orange laser emission. CIE chromaticity diagram has been performed for verifying the results of fluorescence in visible laser applications at 601nm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Luminescence Elsevier

Physical, optical and luminescence properties of B2O3-SiO2-Y2O3-CaO glasses with Sm3+ions for visible laser applications

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0022-2313
eISSN
1872-7883
D.O.I.
10.1016/j.jlumin.2018.01.015
Publisher site
See Article on Publisher Site

Abstract

Silicoborate glasses with composition of (BSYCaSm:(55-x)B2O3+ 10SiO2 +25Y2O3 +10CaO + xSm2O3), (where, x= 0.05, 0.10, 0.20, 0.25, 0.30, 0.40, 0.50, mol%) have been synthesized by using the well-known melt quenching technique. The present work deals with physical, optical, photoluminescence, X-ray luminescence and decay time studies of silicoborate glasses. Judd-Ofelt (JO) intensity parameters (Ω2, Ω4 and Ω6) and radiative properties for the important luminescent level of Sm3+ ions were derived by using the absorption spectrum of 0.3mol% Sm2O3 doped glass. The luminescence spectra in the visible region was obtained due to 4G5/2 → 6HJ (5/2, 7/2, 9/2 and 11/2) transition of Sm3+ ion under 401nm excitation. The decay profile for the 4G5/2 level of Sm3+ ions was analyzed and found that for lower concentration (≤ 0.20mol%) it is single exponential in nature whereas for higher concentration (≥ 0.25mol%), it turns in to non-exponential due to the transfer of energy between donor (excited state Sm3+ion) and acceptor (ground state Sm3+ ion). As the concentration of Sm3+ ions increases the decay time of 4G5/2 state decreases. The well-known Inokuti-Hirayama (IH) model was used for fitting the non-exponential decay curves where S = 6 indicates that energy transfer process is of dipole-dipole type. Hence, in the present work, intense transition of 4G5/2 → 6H7/2 (601nm) is found to be suitable for reddish-orange laser emission. CIE chromaticity diagram has been performed for verifying the results of fluorescence in visible laser applications at 601nm.

Journal

Journal of LuminescenceElsevier

Published: May 1, 2018

References

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